LLNL researchers have developed a TDLAS-based, standalone, real-time gas analyzer in a small form-factor for continuous or single-point monitoring. The system can analyze multiple gases with ultra-high sensitivity (ppm detection levels) in harsh conditions when utilizing wavelength-modulation spectroscopy (WMS).
Keywords
- Show all (50)
- Photoconductive Semiconductor Switches (PCSS) (9)
- Imaging Systems (8)
- Semiconductors (6)
- Optical Switches (4)
- Power Electronics (3)
- Sensors (3)
- Computing (2)
- Electric Grid (2)
- MEMS Sensors (2)
- Optical Sensors (2)
- Particle Accelerators (2)
- 3D Electronics (1)
- Precision Engineering (1)
- Quantum Science (1)
- Simulation (1)
- (-) Spectrometers (2)
- (-) Additive Manufacturing (1)
Image
![Schematic of 2P3C setup. Pump laser component is in red while probe laser component is denoted in blue.](/sites/default/files/styles/scale_exact_400x400_/public/2023-05/trace%20gas%20detection%20with%202P3C%20ring-down%20spectroscopy_0.jpg?itok=FcMiekn3)
LLNL’s novel approach combines 2-color spectroscopy with CRDS, a combination not previously utilized.
Image
![multichannel_pyrometer.jpg multichannel_pyrometer](/sites/default/files/styles/scale_exact_400x400_/public/2019-08/multichannel_pyrometer.jpg?itok=x0sCe_BN)
LLNL researchers have designed and tested performance characteristics for a multichannel pyrometer that works in the NIR from 1200 to 2000 nm. A single datapoint without averaging can be acquired in 14 microseconds (sampling rate of 70,000/s). In conjunction with a diamond anvil cell, the system still works down to about 830K.