Instrument Systems CAS 140CT-HR High resolution CCD array spectrometer

The CAS-140CT-HR Array Spectrometer is a high-resolution instrument designed specifically for measuring the light emitted by narrow-band sources, particularly laser diodes and Vertical-cavity Surface-Emitting Lasers (VCSELs). It’s manufactured by Instrument Systems (IS). Here’s a breakdown of its key features and applications:

Key Features:

• High Spectral Resolution: Achieves resolutions down to 0.2 nm (nanometers), allowing for precise measurement of the narrow emission peaks of lasers and VCSELs.
• Short Measuring Times: Despite high resolution, it offers fast measurement times, making it suitable for production line testing.
• Wide Wavelength Range: Typical measuring ranges are available between 80 nm and 160 nm within the overall spectral range of 800 nm to 1000 nm. However, upon request, other spectral ranges in the visible spectrum (VIS) can be accommodated.
• Cooled CCD Detector: The back-thinned and back-illuminated CCD detector with active cooling (-10°C) ensures high sensitivity, low dark current, and low noise for accurate measurements, especially of extremely short light pulses.
• Multiple Gratings: Offers a selection of gratings with different line densities (1200, 1500, and 1800 lines/mm) to optimize the instrument for specific measurement tasks within its range.
• Data Acquisition and Analysis: Connects to a computer via USB or optionally PCIe interface and is compatible with software for both laboratory and production applications.

Applications:

• Laser Diode Characterization: Measures the spectral properties of laser diodes, including peak wavelength, spectral width (FWHM – Full Width at Half Maximum), and sidemode suppression ratio (SMSR). This is crucial for ensuring laser performance and compliance with specifications.
• VCSEL Characterization: Similar to laser diodes, the CAS-140CT-HR is well-suited for characterizing VCSELs used in various applications like data communication and optical sensors.
• Fast Pulsed Light Source Measurement: The instrument’s ability to handle short light pulses makes it suitable for characterizing pulsed lasers and other fast light sources.
• Research and Development: Valuable tool for researchers developing new laser and VCSEL technologies.
• Quality Control: Ensures consistent and high-quality production of laser diodes and VCSELs in a manufacturing environment.

Overall, the CAS-140CT-HR Array Spectrometer is a powerful tool for any application requiring precise spectral measurement of narrow-band light sources, particularly in the context of laser diodes and VCSELs.