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JASPER: VIS-NIR SPECTROMETERIn the realm of spectrometers, grating-based designs stand out for their unparalleled popularity and straightforward functionality. Enter the configurable grating VIS-NIR spectrometer—your ultimate companion in spectral analysis. With its innovative design tool, you can easily customize and adapt the spectrometer to meet your specific analytical needs, including spectral range, resolution, SNR, and multiple detector options. With the limited options of line array CCD/CMOS detectors available today and the design complexity related to grating orders, arriving at the most optimal design is crucial. Addressing the third overtone, a spectrometer with an elaborate spectral range often proves unnecessary. Often, a spectrometer tailored to a specific spectral range and optimal SNR is the best fit for detecting specific analytes.

JASPER : FTIRThe FTIR spectrometer design is based on the Michelson Interferometer, featuring: 1. 850nm Laser Source: Provides a coherent light source for generating interference patterns. 2. ZnSe Beam Splitter: Divides the incoming laser beam into two paths, directing them towards the retro reflector mirrors. ZnSe, while limiting the spectrometer range, is not humidity-sensitive like KBr. 3. Retro Reflector Mirrors: Reflect the split beams back towards the beam splitter, ensuring the paths of the two beams recombine. 4. Visible Detector: Monitors the interference patterns created by the laser. This data is used to correct the optical path difference. 5. Pyroelectric Detector: While MCT detectors are highly precise, their cost can be prohibitive. Hence, the plan is to use a pyroelectric detector. 6. Fourier Transform Processing: Translates the time-domain interferogram into a frequency-domain spectrum.

JASPER: Peltier cooler for lasersIn the world of precision laser applications, maintaining optimal operating temperatures is crucial. Our latest project focuses on developing a Peltier cooler for Diode-Pumped Solid-State (DPSS) lasers, which require a stable temperature range of 20 to 25 degrees Celsius for optimal performance. TEC controllers employ mostly a buck-boost regulator to control bi-directional current and need a digital PID controller to ensure the temperature is stabilized within a short span with minimal ringing and overshoot. We will be developing a GUI to help set the required temperature, tune the PID parameters, and visualize the way the temperature stabilizes. The Peltier element, the heat sink, and the thermodynamics are critical in the design. We are in the learning stage and, as we progress, we hope to find the optimal solution.

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