Raman Spectrometer 532/785/1064nm
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Maskless Lithography UV Laser Writer
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Time Correlated Single Photon Counting
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X-ray/XRD Temperature Control Stage
Electrical Probe Temperature Stage
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Infrared Linear Detector /LVF (2-12um)
Standard Beam Profiler (190-1100nm)
1inch Aperture Beam Profiler (190-1100nm)
SWIR Beam Profiler (900-1700nm)
IR Beam Profiler (2-16um)
Terahertz Beam Profiler(1-18 THz)
Scanning Slit Beam Profiler (190-2500nm)
Power Meter Sensor 250-2500nm
Sensor Controller (OPM)
Integrating Spheres
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1/2m&1/4m Monochromator/Spectrograph
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Autocorrelator - Single Shot
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Optical Test Measurement System
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CW Pigtailed Laser Diode (400nm-1550nm)
CW Laser Diode Module 375-785nm
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DFB/FP Picosecond Laser (370-1550nm)
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2000nm Widely Tuneable Laser
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Broadband Femtosecond Laser 950-1150nm
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Single Wavelength LED Source(240-980nm)
Multi-wavelength LEDs Source (240-980nm)
ASE/SLD Light Sources (1250-2000nm)
IR Emitter Chip (2-14um)
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Infrared (IR) sources are micro-machined, electrically modulated thermal infrared emitters featuring true black body
radiation characteristics, low power consumption, high emissivity and a long lifetime. The appropriate design is based on
a resistive heating element deposited onto a thin dielectric membrane which is suspended on a micro-machined silicon
structure.The sources are packaged in compact cans and are available with protective cap or with reflector. They can be
fitted optionally with Sapphire, CaF₂, BaF₂ or Germanium broadband IR sources are ideally suited for compact IR gas
detection modules where a high emissivity, high reliability and low power consumption are key requirements.
For Gas Measurement
CO, CO₂, VOC, NOx, NH₃, SOx, SF₆, hydrocarbons, humidity, anesthetic agents, refrigerants, breath alcohol
Technology highlights
• True black body radiation (2 to 14 μm)• High emissivity• Fast electrical modulation (no chopper wheel needed)• High modulation depth• High electrical input to optical output efficiency• Low power consumption• Long lifetime• Rugged MEMS design (passed the requirements of IEC 60721-3-7 Class 7M3, except for BaF₂ and CaF₂ (broadband filters)
Applications
• Medical:Capnography, anesthesia gas monitoring, respiration monitoring, pulmonary diagnostics, blood gas analysis• Industrial:Combustible and toxic gas detection, refrigerant monitoring, flame detection, fruit ripening monitoring, SF₆ monitoring,
semi-conductor fabrication
• Automotive:CO₂ automotive refrigerant monitoring, alcohol detection & interlock, cabin air quality• Environmental:Heating, ventilating and air conditioning (HVAC), indoor air quality and VOC monitoring, air quality monitoring
IRS Labkit
Features:
• Faster and easier design-in of Axetris IR Source family EMIRS200 and EMIRS50• Very efficient tool for evaluating the ideal drive mode for achieving the best signal/noise ratio• Quick and easy start-up and measurement within minutes• Includes everything you need
• Simple Graphical User Interface (GUI) based on LabVIEW software• Set and update all drive parameters live from the GUI• Live diagram plots for data display and recording• Visualized drive mode limitations (recommendations)• Export of bitmap and Excel data
• Direct connection to a PC with RS232 protocol and USB• TO socket and connector for external IR source connection• I/O analog interface for detector synchronization and signal evaluation
Labkit Driver Board
IRS Labkit Specification
Broadband filters Option & Optical Emission Vs. Angle
• Complements detector filter• Eliminates background signal and improves S/N ratio• Protects the IR source in harsh environments• Prevents parasitic influence of the sample gas (for tightly sealed broadband filter installation)
Custom Reflector
• Optimization of the emission distribution with Zemax
Reflectors collimate IR radiation on axis. (red: high emission density per area;
blue: low emission density per area).
True black body radiation (wavelength from 2 μm to 14 μm)
High emissivity
• A unique thin film process creates a pure black body structure with emissivity close to 1.
Fast electrical modulation and high modulation depth MEMS technology
• offers the possibility to achieve thin and low-mass membrane with short time constant, enabling IR-source to be modulated at high frequency with high modulation depth.
Driven with a constant voltage square-wave drive and measured with a high speed
broadband detector.
High electrical input power to optical output efficiency
• Due to the black surface, the IR source has excellent electrical to optical conversion efficiency. The black body surface guarantees maximized emissivity while the thin membrane is responsible for optimized heat flux.
Efficiency optimization by heat flux simulation.
Reliability of the MEMS structure• The semiconductor MEMS manufacturing technology guarantees high reliability and quality of the IR sources. In addition to the strict quality control system during wafer-level manufacturing, every single IR source is subjected to a final burn-in and test.
• The Mean Time To Failure (MTTF) for membrane breakage of the IR source is based on a statistical analysis of lifetime data collected from several years of reliability testing. Reliability of the membrane breakage depends greatly on the type of packaging, the electrical input power and the operating mode.
Lifetime reliability plot for IR Sources in modulated mode with 10Hz (EMIRS200),
30Hz (EMIRS50) with a typ. duty cycle of 62% (dashed line) and CW mode (solid line).
Main Measurement Principles:
Non-Dispersive InfraRed (NDIR) principleNon-Dispersive InfraRed spectroscopy utilizes a broadband infrared source covering the entire wavelength spectrum needed to measure a large variety of gases. The specific wavelengths desired to measure the gas(es) of interest are selected with narrow band pass filters. The radiation is absorbed by the gas resulting in a signal decrease which is proportional to the gas concentration inside the sample volume. Thermopiles or pyroelectric detectors are commonly used for this spectroscopy technique.
Photo-Acoustic Spectroscopy (PAS) principle
When infrared radiation is absorbed, the absorbing gas is heated. This heating causes a thermal expansion which, in turn, is responsible for a pressure increase in the sample volume. When the radiation is switched off, the gas cools down and the pressure decreases accordingly. With a pulsed IR source, a pressure wave e.g. soundwave is created which can be detected with a microphone. The higher the concentration of the gas of interest (appropriate wavelength has to be chosen with filters), the higher the signal. PAS is not limited to gases but can also be applied to liquids and solids.
Attenuated Total Reflectance (ATR) principleWhen radiation is totally reflected from an interface a small part of it will be transmitted into the adjacent medium. This evanescent wave experiences an exponential decay with penetration depths in the order of the wavelength. The amount of light that is coupled into this evanescent wave depends on the difference of refractive indices of the two adjacent media. In ATR spectroscopy, a crystal made of a high refractive index material serves as the light guiding medium. The sample, usually a liquid, is brought into contact so that the evanescent wave can interact with it. The appropriate wavelength is chosen with a narrow band pass filter. Depending on the state or quality of the sample, more or less light is coupled out and the signal on the detector then changes accordingly. Line arrays of thermopiles or pyroelectric detectors are frequently applied in these setups.
Product Portfolio & Brochures
English: IR LED Chip
产品册中文: IR LED Chip
Electrical/Optical Characteristics
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