Laser Measurement System Features
• Measure and track Laser frequency and centroid wavelength with up to 0.05nm spectral resolution
• Laser Analysis Systems include a miniature spectrometer, a fiber optic cable (or direct attachment), a light collecting accessory/integrating sphere, and a NIST traceable intensity calibration
• Systems can also be simultaneously calibrated for absolute intensity measurements in milliwatts using integrating spheres
• Monitor laser shift with auto-peak finder and episodic data capture
• Spectrometer configurations available to cover the 190-2300nm range
Spectrometers for Laser Measurement
These miniature rugged spectrometers are calibrated to measure and track laser frequency and centroid wavelength and/or total power of lasers in Watts. Currently, StellarNet offers laser measurement systems in the 200-2300nm range. All of StellarNet’s spectrometers can be configured for laser measurement including the BLUE-Wave, GREEN-Wave, High Resolution, and High Resolution NIR spectrometer models. The spectrometers can additionally be calibrated with our NIST traceable lamps for absolute intensity to be used to capture laser intensity profiles and shape. Typically an integrating sphere such as the IC2 2″ or IS6 6″ integrating sphere is coupled along with a radiant flux calibration (RAD-CAL).
StellarNet SpectroRadiometers? – UV-VIS-NIR Ranges 200-2300nm – Low cost – Ruggedized high performance – Shock-proof – Permanently aligned – SpectraWiz Software included Free – Battery packs for field measurements – USB-2 interface to all notebook PCs
Visible Laser Measurement Spectrometers
The StellarNet miniature spectrometers are fiber optically coupled instruments with a wide selection of models for laser measurements in 200-1150nm wavelength ranges
Visible High Resolution (HR) Systems
The HR spectrometers have double the resolution over standard models with the same grating. The wavelength range is reduced by the same factor. Resolutions better than 0.1nm can be achieved depending on selected model range, detector, and slit size.
NIR High Resolution Systems
In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which uses high resolution NIR spectrometers. WDM is based on the concept of using multiple wavelengths of light on a single fiber by using different wavelengths (colors) of laser light to carry different signals. Conventional WDM systems provide channels in the C-band of silica fibers around 1550 nm. StellarNet uses tunable laser sources for calibration of the high resolution unit. The NIR3-HR InGaAs 1024 is recommended to cover the 1500-1640nm range and provides FWHM of 0.7nm
Current Customer Publications- click on the links to the right to see some current StellarNet customer applications involving laser measurement…
NIST Calibrations The factory performs calibrations for the appropriate wavelength range of your spectrometer using NIST traceable calibration lamps (calibration service such as IRRAD-CAL must be ordered with spectrometer and proper measurement accessories) Fast delivery: most system can be calibrated and shipped within 1 week after receipt of order. Absolute calibration: accuracy within 10% at detector integration setting used for calibration. Certificate available: documentation with NIST traceable serial numbers. If the user has an appropriate irradiance calibration source lamp, a field re-calibration can be easily performed using the included SpectraWiz software. Calibrations are available for UV, VIS,NIR ranges and can be configured for spectral irradiance (W/m^2), radiance (W/m^2/sr) and total power in watt flux in Watts.
- Fast delivery: most system can be calibrated and shipped within 1 week after receipt of order
- Absolute calibration: accuracy within 10% at detector integration setting used for calibration
- Certificate available: documentation with NIST traceable serial numbers.
- If the user has an appropriate irradiance calibration source lamp, a field re-calibration can be easily performed using the included SpectraWiz software
The factory performs several x-axis calibrations on all spectrometers and depending on customer application a StellarNet spectrometer may be calibrated also in the y-axis for absolute intensity measurements. A y-axis Irradiance calibration is performed using NIST traceable lamps. There are several available calibrations depending on your spectrometer wavelength range and slit size.
*Note- Spectrometer range can be smaller than calibration range. Also, IRRAD-CAL and IRRADUV-CAL calibrations can only be preformed simultaneously on BLACK-Comet concave grating model spectrometers.
Irradiance Calibration PDF
Laser Measurement Sample Spectra
BLUE-Wave-NIR2b model spectrometer (785-1200nm).The software measures the “centroid” of laser to provide center wavelength accurately. The centroid calculates the area under the laser spectrum then divides the area in half to locate the center of the spectra and thus an accurate wavelength.
NIR2-HR HgA Emission Spectra using High Resolution NIR2-HR model spectrometer. StellarNet spectrometers can be built to customer specification in most cases. There is no extra charge for a ‘custom’ range spectrometer; however, it does become a non-returnable item.
|High Resolution Configurations Predicted Slit Resolutions|
|HR model||Wavelength Range in nm||Grating g/mm||Grating Range||Nm/pixel Dispersion||Slit-25 nm res.||Slit-14 nm res.||Slit-7 nm res.|
|Item||Miniature Fiber Optic SpectroRadiometers||Price|
|BLACK-Comet||Concave Grating spectrometer for UV-VIS. C (190-850nm) or CXR (280-900nm)||$2950|
|BLACK-Comet-SR||Super Range Concave Grating spectrometer for UV-VIS-NIR. C-SR (200-1080nm) or CXR-SR (220-1100nm)||$3495|
|SILVER-Nova||High Sensitivity “Super Range” spectrometer for UV-VIS-NIR 200-1100nm. Includes UV detector upgrade, detector lens assembly, composite grating technology, and super cooled TE detector.||$4,495|
|RED-Wave-NIR 512||NIR Spectrometer, 900-1700nm, with cooled 512 element InGaAs PDA detector||$13,125|
|RED-Wave-NIR 1024||NIR Spectrometer, 1000-1700nm, with cooled 1024 element InGaAs PDA detector||$17,695|
|InGaAs-1024-NIR3-HR||NIR Spectrometer, 1500-1640nm, with cooled 1024 element InGaAs PDA detector||$18,195|
|NIST Traceable Calibrations per spectrometer channel|
|IRRAD-CAL||SpectroRadiometric Calibration VIS-NIR for range 300-1100nm or 900-1700nm||$250|
|IRRADUVN-CAL||SpectroRadiometric Calibration VIS-NIR for range 300-1700nm||$500|
|IRRADUV-CAL||SpectroRadiometric Calibration UV for range 200-400nm||$250|
|RAD-CAL||Radiant power calibration (flux) in Watts/nm and Lumen/nm (for LEDs) 300-1100nm||$250|
|RAD-CAL-SR||Radiance calibration in Watts/sr/m^2/nm can measure Cd/m^2/nm – requires CR-LENS for CR2||$250|
|IRRAD-CAL-DOC||Optional Irradiance Calibration certificate with NIST traceable serial numbers||$125|
|Wavelength Calibrations per spectrometer channel|
|WAVE-CAL||High Resolution NIR for range 1500-1640nm using HP tunable laser source||$2500|
|Fiber Optic Accessories for SMA-905 fiber optic attachment|
|CR2||CR2 Cosine Receptor for UV-Vis-NIR with 1/4 inch diameter for SMA 905||$180|
|CR2-AP||Screw on aperture for CR2 allows measurement of light that is 10 times brighter||$165|
|IC2||Integrating Cube Receptor ( Sphere), 2 x2 x2 inches with 5/8 inch input port||$495|
|IS6||6” integrating sphere with a 2.0” input port, 1 SMA fiber optic output, and internal white coating||$1745|
|IS12||12” integrating sphere that allows for internal mounting of devices for light measurement such as discrete LEDs, arrays, and bulbs. The sphere opens for simple access to mounting devices. IS12 Sphere includes lamp with data file used to calibrate the system for total flux measurements in watts/nm and lumens/nm.||$3495|
|F600-VISNIR||Armored 2 meter fiber optic cable attaches Receptor to SpectroRadiometer||$160|
|TP1||Tripod for mounting and positioning CR2/IC2 light receptors||$65|
*Note: actual spectrometer range can be smaller than range described for radiometric calibration *Please contact a StellarNet sales representative about more spectrometer configurations *Annual recalibration discounts and recalibration packages available ContactUs@StellarNet.us to inquire about StellarNet Calibration Services
Free SpectraWiz Software
The powerful SpectraWiz® spectrometer software is provided free of charge with every spectrometer instrument. This includes drivers and customizable software for Windows. The SpectraWiz software is considered the “Swiss Army Knife of Spectroscopy” and may be used to accurately measure wavelength emissions, reflectance, transmission, absorption, concentrations, and absolute intensities. In addition to real-time spectroscopy, SpectraWiz® has built-in applications for SpectroRadiometry, SpectroColorimetry, ChemWiz chemistry lab concentration analyzer, and UV level monitors. Download SpectraWiz Software FREE
SpectraWiz Laser Monitoring Tools
– Display FWHM, centroid, and peak wavelengths
– Power spectral density via manual cursor setup
– Zoom x-axis, zoom xy window, set or y-autoscale
– View y-axis as log or linear scale
– Optical trigger event setup for spectral capture
– Episodic capture can save via optical trigger event
Total Power, Absolute Intensity, & Colorimetry
- Absolute intensity measurements Watts/m2
- µm watts/cm2
- Lumens/m2 — LUX
- Moles per second — PAR
- Footcandles /m2
- Radiant Flux (watts) / Luminous Flux (lumens)
- xy Chromaticity, dominant wavelength, purity
- Correlated Color temperature (CCT)
- Set Power Spectral Density (PSD) range
For more information about the FREE SpectraWiz Software Suite and all our other customizable full source codes and programs click on the picture links below!
StellarNet Integrating Spheres allow direct input of laser light for total power measurement. The IC2 is a 2″ internal diameter sphere with 2 SMA connectors for illumination and collection of light. Mounting tripods and other accessories are available for laser measurement.
IS6 is a 6” diameter integrating sphere with a 2.0” input port, internal reflective coating, baffle system, and SMA fiber optic output. StellarNet 6″ integrating spheres are now available with several port accessories such as calibration lamps, caps, SMA-couplers, and reducers.
IC2 is a 2” cube with internal integrating sphere. It has 5/8” input port and SMA fiber optic output. Another SMA input can be used for reflectance illumination. Select the IC2-TP miniature tripod for mounting the IC2 for alignment and repeatable measurement.
Dual DSR Spectroradiometer- StellarNet Dual DSR system pictured above uses a Y bifurcated fiber (F600-Y-UVSRNIR) to connect a BLACK-Comet-SR spectrometer and a RED-Wave NIR Spectrometer. The entire system can be radiometrically calibrated over the range 200-1700nm. Above system pictured with Flash Capture Interface (FCI) that allows spectrometer to capture emission from flashing sources such as flashtubes and pulsed solar simulators.
Technical Information Request
StellarNet, Inc. Tampa, Fl USA 10/15/2018 Array Detector Defects and Nonuniformities: All array detectors, both 1D and 2D, will inevitably suffer from defects and pixel-to-pixel nonuniformities due to the limitations of high-volume semiconductor manufacturing...read more