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 (71)
- Sensors (16)
- Imaging Systems (9)
- Photoconductive Semiconductor Switches (PCSS) (9)
- Semiconductors (6)
- Ground Penetrating Radar (4)
- Optical Switches (4)
- Defense Technologies (3)
- Power Electronics (3)
- Computing (2)
- Electric Grid (2)
- MEMS Sensors (2)
- National Security Forensics (2)
- Optical Sensors (2)
- Particle Accelerators (2)
- Quantum Science (1)
- (-) Spectrometers (2)
- (-) Additive Manufacturing (1)
- (-) Precision Engineering (1)
![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.
![mesoscale_nand_gate.jpg mesoscale_nand_gate](/sites/default/files/styles/scale_exact_400x400_/public/2019-08/mesoscale_nand_gate.jpg?itok=0APzWSXN)
Recent advancements in additive manufacturing, also called 3D printing, allow precise placement of materials in three dimensions. LLNL researchers have invented mechanical logic gates based on flexures that can be integrated into the microstructure of a micro-architected material through 3D printing. The logic gates can be combined into circuits allowing complex logic operations to be…
![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.