Innovative solutions for IR spectroscopy

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1 Innovative solutions for IR spectroscopy European leader in advanced technology solutions Get in touch: Tel : +46 (0) info@acalbfi.se consult. design. integrate.

2 About Acal BFi Acal BFi are Europe s leading provider of advanced technology solutions, operating in 12 countries throughout Europe. We offer products across specialist technology areas, each with a dedicated pan-european sales team. Customers use our design-led expertise and expert consultation services to find the best technology solutions for their design, prototype and production needs. Get in touch Table of contents Acal BFi Nordic AB Fålhagsleden 59 Box 3002 SE Uppsala Sweden T: +46 (0) E: info@acalbfi.se Page 3 Page 4 Page 5 Pages 6-7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 A short introduction to Acal BFi Photonics Overview of our solutions for IR spectroscopy Grating-based NIR spectrometers Near-infrared spectroscopy used in photovoltaics panel development Grating-based MIR and IR spectrometers FTIR spectrometers MEMS-based IR spectrometers Real-time moisture analysis of solid samples in industrial manufacturing processes Ultra-high-resolution wavelength meters and analysers Optical components and high-transmission fibres for IR spectroscopy Accessories for IR spectroscopy Lasers, laser spectroscopy systems and laser safety Your local point of contact 2

3 A short introduction to Acal BFi Photonics The Acal BFi Photonics business originally started in 1973 under the Optilas name and was the first European distributor of optics, lasers and related instrumentation. More than 40 years later we are still unique, being the largest European distributor and service supplier in the Photonics market and the only one with a pan- European coverage. We have a dedicated Photonics sales and service team of more than 40 engineers who are highly focused on the customer support for the following products: Lasers from large volume OEM integrators in the biomedical or laser material processing markets, to the most sophisticated picosecond or femtosecond laser systems for research work. Passive optical components addressing laser users and designers, and the LED and luminaires lighting market. Active optical components we offer a wide range of solutions including unique technologies and performance for modulators and galvanometer-based scanners, high-end laser material processing and some proprietary technologies. Optical instrumentation dedicated to laser characterisation (power, energy, wavelength, beam profile, M2), spectroscopy (from high-end scientific equipment to cost-effective OEM solutions) and photometry (LEDs, luminaires, colour and display characterisation). Need and application understanding Customer problem Optimised solution from Acal BFi Acal BFi in partnership with customer and supplier Recent additions to our offer Launched unique cost-effective MEMS-based IR spectrometers. Launched our own optics range, focused on high-end femtosecond to nanosecond applications. New range of all-digital, maintenance-free scanning heads, offering significant improvements over the best-in-class competitor in terms of speed versus accuracy combination. New range of LED and luminaires goniometer characterisation solutions which are significantly cheaper, easier to use and more compact than those previously available. Entered into the Terahertz market with some unique solutions. consult. design. integrate. 3

4 Overview of our solutions for IR spectroscopy From UV to 12 microns, Acal BFi work with world-leading suppliers to support our customers with a variety of components, spectrometers and spectral analysis solutions. As well as supporting customers with traditional grating-based spectrometers we also offer FTIR and MEMS-based solutions, using either Michelson or Fabry-Perot interferometers. Acal BFi have become a specialist of IR spectroscopy with unrivalled capabilities. From bench-top systems to compact integrated systems that can be used in UAV, from high-end to cost-effective solutions, our team of experts will help you find the best IR spectroscopy solution for your application, at the optimum cost. This brochure gives you a brief overview of our capabilities for IR spectroscopy. Please contact our local teams for more information or a product demonstration. Product range Spectral range Resolution Key features More on Grating-based NIR spectrometers Grating-based MIR and IR spectrometers µm 3-20 nm 2-20 µm 7-22 nm Most popular and modular configuration Mainly scientific, LN cooled for 20 µm FTIR spectrometers µm 4 cm -1 Cost-effective scientific and industrial solutions MEMS-based IR spectrometers Wavelength meters and spectrum analysers µm % of λ 1-12 µm Resolution 2 GHz, absolute accuracy ± nm Cost-effective, miniaturised OEM modules Highest resolution, CW and high rep rate lasers only Page 5 Page 8 Page 9 Page 10 Page 12 4 Material processing Biomedical Environmental Scientific

5 Grating-based NIR spectrometers NIR grating-based spectrometers are a popular and versatile tool for applications ranging from moisture detection and chemical analysis to high-resolution laser and optical fibre characterisation. They use an InGaAs (Indium Gallium Arsenide) detector array and cover a wavelength range from nm. Typical set-ups include absorbance, transmittance or reflectance measurements. Description and key features High-stability 256 or 512 elements InGaAs-array detector in a compact optical bench with two-stage thermoelectric cooler and low-noise electronics. External hardware triggering functions allow users to capture data when an external event occurs, or to trigger an event after data acquisition. This capability can be especially useful for capturing data from automated processes or from devices such as solar simulators that flash synchronously. Reliable, robust spectrometer with deep thermoelectric cooling down to -20 C for low dark current. Fast data transfer great for applications with chemometric models. Configurable with a range of detectors, gratings and slits for your specific application. Most popular products (pre-configured spectrometers) Model Resolution (25 µm slit) Wavelength range NIRQuest512 ~3.0 nm nm NIRQuest ~3.1 nm nm NIRQuest ~4.6 nm nm NIRQuest ~6.3 nm nm NIRQuest <8.0 nm nm NIRQuest <10.0 nm nm NIRQuest top-selling spectrometer Typical applications Agricultural measurements and monitoring Biotechnology applications and medical diagnostics Food and beverage quality control Metallurgical analysis Polymer analysis Solar panel development Material processing Biomedical Environmental Scientific 5

6 Near-infrared spectroscopy used in photovoltaics panel development With their modest cost, compact size and great flexibility, UV-VIS-NIR miniature fibre-optic spectrometers are attractive analytical tools for photovoltaic materials research and quality control. Typical applications include analysis of the optical properties of solar cell materials, spectroradiometric measurement of solar simulators used in panel testing and quality control in panel production. Case study We evaluated NIR spectroscopy as a method to measure the reflection of photovoltaic panel materials. A manufacturer of thin film photovoltaic panels requested NIR reflectivity analysis of several coated glass samples. Measurements were conducted from nm under ambient lab lighting conditions. Because the absorbance of photovoltaic panels is so critical, determining the reflectivity at panel edges and elsewhere is a good indicator of the light loss at those areas. The use of anti-reflective coatings and glass dopants are among the approaches manufacturers may evaluate in improving panel efficiency. Experimental conditions Five coated glass samples were analysed with an Ocean Optics NIRQuest spectrometer configured with a 100 µm slit and optimised for the range from nm. The sampling set-up comprised a tungsten halogen light source, 400 µm reflection probe and an optical stage. A specular reflection standard was used as a reference. Spectrometer operating software completed the set-up. The glass samples were placed on the sample holder uncoated side down, to ensure the probe measured the reflection from the coating through the glass. The optical stage helped to position the probe at 90 to measure specular reflectance. Measurements were taken under overhead lighting conditions. The high-powered tungsten halogen light source provided continuous illumination from nm. The distance from the tip of the reflection probe to the surface of the sample was measured at ~7.0 cm for each sample, to simulate production conditions. 6 Material processing Biomedical Environmental Scientific

7 Ocean Optics NIR spectrometers use a high-performance InGaAs-array detector in a compact optical bench with thermoelectric cooler and low-noise electronics. The NIRQuest is suited to applications involving higher wavelengths (peak responsivity is ~1900 nm). The spectrometer s rapid integration times spectral acquisition of 1 millisecond is possible make it viable for high-production environments. Results The measurements showed good stability with no averaging and boxcar smoothing. The reflection spectra for the samples (see graph below) demonstrated that reflection values increased as a function of wavelength comparably across all five samples, peaking at about 2000 nm. Also, the gap between the least reflective and most reflective samples was relatively narrow at the lower and upper ranges of the wavelength range, with the greatest variation observed near 1700 nm. Reflectance intensity of the coated samples ranged from ~25% at the lower wavelengths to as much as 80% at the higher wavelengths. These values are relative to the response of the specular reflectance standard, which has nearly flat reflectivity across all NIR wavelengths. Conclusion As developers of photovoltaic materials seek improvement in cell efficiency, the need for convenient analytical tools to evaluate glass coatings, dopants and other materials is great. Optical sensing systems such as NIR spectrometers, thin-film measurement systems and solar-simulator testing units can be configured for both research lab and process line applications. NIR spectroscopy can be used to determine the specular reflectivity of coated glass samples relative to each other and to known reflectance standards. As a result, the solar-light-capturing efficiency of the five sample coatings can now be inferred using the Ocean Optics spectrometer and accessories. Material processing Biomedical Environmental Scientific 7

8 Grating-based MIR and IR spectrometers For more than 20 years Acal BFi have offered infrared detectors, including complete multi-channel, laser-pulse spectroscopy systems with unique performance in the MIR and IR spectral range. These are used in a wide range of laboratory experiments, one of the most popular being pump-probe, ultrafast, time-resolved spectroscopy experiments. FPAS high-performance IR spectrometer system Description and key features The core of the FPAS system lies in the ultra-high-performance detector, which is a TEC, Stirling or LN2 cooled linear MCT array of up 128 elements in 1 or 2 rows. Combined with a high-quality monochromator and fast multichannel electronics, the FPAS system is the highest performance IR spectrometer on the market today. Its main characteristics are: Spectral range from 2 to 20 µm Fast multichannel low-noise electronics Wide range of spectrometers to optimise resolution Single shot to 50 khz (100 khz optional) laser repetition rate Supplied with a PC and integrated labview SW control Typical applications Multi-dimensional vibrational spectroscopy Ultra-fast laser pulse spectroscopy Time-resolved vibrational spectroscopy Femtosecond pump-probe 2D and 3D infrared spectroscopy Chopper-based, high-resolution spectroscopy 8 Material processing Biomedical Environmental Scientific

9 FTIR spectrometers Acal BFi supply the world s smallest FTIR spectrometers. Their unique design allows low sensitivity to vibrations and temperature drift, offering a cost-effective, high-performance solution for NIR and IR spectroscopy. Description and key features Robust and compact design 4 cm -1 resolution across the entire range High sensitivity Built-in, solid-state reference laser Single element MCT or InGaAs detector High reproducibility in both wavelength and intensity OEM version of an FTIR spectrometer Most popular products Product Spectral range Key features Fibred FT-IR Fibred FT-NIR 2-12 µm ( cm -1 ) µm ( cm -1 ) Most compact FTIR in the world, high performance and cost effective Highest sensitivity in the NIR Vis-NIR spectro 360 nm µm Unique spectral range from a single unit Typical applications Laser characterisation Optical spectrum analyser (OSA) Chemometrical analysis Reflectance measurement on paints, plastics and cosmetics Gas analysis Food and wine analysis Air-quality control Case study high-precision determination of alcohol concentration in wine with an FTIR spectrometer The standard approach to measuring alcohol concentration in wine has been via distillation and density measurement. This technique is very accurate but very time consuming, requires qualified personnel and is not easily automated. A new approach has been developed using NIR spectroscopy and taking benefit of the ethanol versus water spectral signatures in the spectral range nm. The use of the spectral data and a proper chemometric model led to extremely high accuracy and repeatability from a much simpler and cost-effective process. Material processing Biomedical Environmental Scientific 9

10 MEMS-based IR spectrometers Acal BFi offer the world s first truly miniaturised, affordable and robust infrared MEMS spectrometer. It is capable of covering NIR ranges above 1.7 µm without any losses in performance, making it a real outdoor spectral sensor. This unique technology incorporates an ultra-stable, micromechanical, Fabry-Perot interferometer and needs only a single-point detector, allowing compact size, high throughput, high dynamic range and cost effectiveness. It operates at temperatures up to 70 C and has high resistance to shocks and vibrations, while keeping a top-of-the-line temperature stability and device-to-device repeatability. Unlike in FTIRs or linear array-based devices, the sensor can be configured for each measurement application by software for signal-to-noise optimisation and data reduction. It operates within the wavelength ranges of µm and µm, while other wavelength ranges can be offered on request (including longer wavelengths). Description and key features Ultra-compact and very-low-power consumption Ultralight (<125 g) Broad temperature operating range Low sensitivity to vibrations Programmable High sensitivity and throughput Fibre coupled or open space Most popular products Product Spectral range Detector N µm Single element extended InGaAs N µm Single element extended InGaAs N µm Single element extended InGaAs M µm Single element PbSe M µm Single element PbSe Typical applications Moisture Ethanol Polymers Hydrocarbons CO 2 Pharmaceuticals Typical measurement scheme Beverages Food composition 10 Material processing Biomedical Environmental Scientific

11 Real-time moisture analysis of solid samples in industrial manufacturing processes Fast and accurate moisture measurement Easy-to-integrate to your process with off-the-shelf reflection probes Sensitivity to ultra-low concentrations Moisture is a critical parameter in many industrial processes Moisture is an important parameter for quality control of several products. It is possible to measure moisture content without any sample preparations by using near-infrared (NIR) spectroscopy. Typical applications of moisture measurement are found in industrial manufacturing processes including pharmaceutical manufacturing, food processes, paper production and agriculture applications. Moisture measurement itself is non-destructive and fast, normally taking only a few tens of milliseconds per sample. Spectral Engines spectral sensors let you optimise your measurement based on the requirements of application with fully programmable device technology. Case study Moisture content was analysed from paper samples. The level of moisture varied from %. Even the low concentrations were easily detected with high accuracy. Other potential applications for Spectral Engines moisture sensors are pharmaceuticals, food processing, bioenergy and extrusion processes. Conclusion Spectral Engines compact and cost-effective NIR spectral sensors enable fast, non-destructive, high-performance, ultra-low-moisture-content measurements in real-time process-monitoring applications. Sensors can be used in process and portable instrumentations and they are easy to combine with off-the-shelf process probes. Material processing Biomedical Environmental Scientific 11

12 Ultra-high-resolution wavelength meters and analysers Acal BFi supply world-leading optical interferometer-based instrumentation. Our proven Michelson interferometer and Fizeau etalon technologies ensure that our products provide reliably accurate measurements for scientists and engineers who are involved in scientific research, fibre communications and optical metrology. Flagship products accurately characterise the wavelength and spectral properties of lasers used by researchers at universities, government laboratories, and industrial laboratories. They are also used for the development and production testing of laser transmitters used in optical fibre communications. Description and key features 375 nm - 12 µm spectral range Absolute wavelength to an accuracy as high as ± nm Built-in wavelength standard for continuous calibration High-accuracy wavelength measurement and high-resolution spectral analysis in one instrument Most popular products Product Spectral range Feature 621-NIR nm Wavelength meter for CW lasers 621-IR 1-5 µm Wavelength meter for CW lasers 621-MIR µm Wavelength meter for CW lasers 771-NIR nm Spectrum analyser for CW and high-repetition-rate pulsed lasers 771-IR 1-5 µm Spectrum analyser for CW and high-repetition-rate pulsed lasers 771-MIR µm Spectrum analyser for CW and high-repetition-rate pulsed lasers 821-NIR nm Wavelength meter for pulsed and CW lasers Typical applications High-resolution laser spectroscopy Mid-IR laser spectroscopy Tunable diode laser spectroscopy Photochemistry Chemical and environmental sensing Optical cooling and trapping Laser development and characterisation Optical remote sensing 12 Material processing Biomedical Environmental Scientific

13 Optical components and high-transmission fibres for IR spectroscopy Acal BFi can help IR spectroscopy customers by advising and supplying a range of optical components. Passive free space optics Our team of optical components experts can help you find the best optical component for your needs at the optimum cost, including: Diffraction gratings Optical filters Mirrors, lenses, waveplates Polarisers (including wide-grid polarisers) Reflectors Opto-mechanical sub-assemblies High-transmission IR fibres Acal BFi supply single- or multi-mode, hollow-core fibres which offer much higher transmission in IR than in standard technologies. Active optical components Should your application need to scan or modulate a laser beam, we can support you with a range of active scanning and modulation devices based on various technologies, including: Galvanometer scanners Germanium based acousto-optic modulators and deflectors Material processing Biomedical Environmental Scientific 13

14 Accessories for IR spectroscopy Acal BFi can also support you with a complete range of accessories and devices for IR spectroscopy users or people that want to build their own solution. IR light sources Wavelength ranges from VIS-NIR ( nm) to mid-ir (2-18 microns) Electronically stabilised Available both as laboratory or OEM versions Gas cells Multipass cells for low absorption measurement within a compact set-up and flow cells. We can support you with your experimental set-up. Monochromators and spectrographs We can supply a range of monochromators and spectrographs, from compact low cost OEM modules to long focal-length or double / triple monochromators for ultimate performance. Infrared detectors We supply high-performance single detectors and arrays to cover the entire IR range up to 20 μm. Depending on the required configuration, cooling is either TEC, Stirling or LN2 based. Special and custom detectors and electronics are also part of our offering. PV MCT (HgCdTe) PC MCT (HgCdTe) PV InSb LN2 cooled Thermo-electric cooled (TEC) Stirling cooled 14 Material processing Biomedical Environmental Scientific

15 Lasers, laser spectroscopy systems and laser safety Acal BFi are also working with leading suppliers of IR lasers and laser safety devices (such as goggles, curtains and windows). Lasers can be supplied as stand-alone units or integrated into complete IR spectroscopy solutions. Most popular IR lasers features Nanosecond solid state lasers: 3-10 ns, 10 Hz to khz, tunable from 195 to 2600 nm Picosecond solid state lasers: 5-30 ps, 10Hz to 86 MHz, 210 nm to 16 µm CO 2 lasers (10.6µm or 9.3 µm), CW from 10 to 500 Watts Examples of complete laser based IR spectroscopy set-up SFG spectrometer This is the ideal laser spectroscopy tool for in-situ investigation of surfaces and interfaces. It operates from 4300 to 625 cm -1 and provides <6 cm -1 spectral resolution. The heart of the system is a picosecond Nd:YAG laser generating 25 ps pulses that pump an OPG/DFG delivering from 20 to 260 µm per pulse across the IR range. Initially developed as a custom solution for one of our customers, this has become a standard product and the reference for worldwide SFG spectroscopists. Mid-IR spectrometer for gas sensing A custom solution was recently developed by one of our suppliers in collaboration with a scientific lab, with the aim to develop highly sensitive trace gas sensors. These sensors used an external cavity quantum cascade laser (EC-QCL), which enabled relatively broad wavelength tuning (eg, Δλ 1 µm) over the mid-infrared (mid-ir) molecular fingerprint region. The sensors used multi-pass cells to detect ppm to ppb levels of a range of species, including relatively large molecules, such as pollutants, hydrocarbons, and other volatile organic compounds (VOCs). Material processing Biomedical Environmental Scientific 15

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