Gas detection sensitivity of hybrid fs/ps and fs/ns CARS
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Coherent anti-Stokes Raman scattering (CARS) is commonly used for thermometry and concentration measurement of major species. The quadratic scaling of CARS signal with number density has limited the use of CARS for detection of minor species, where more sensitive approaches may be more attractive. However, significant advancements in ultrafast CARS approaches have been made over the past two decades, including the development of hybrid CARS demonstrated to yield greatly increased excitation efficiencies. Yet, detailed detection limits of hybrid CARS have not been well established. In this Letter, detection limits for N2, H2, CO, and C2H4 by point-wise hybrid femtosecond (fs)/picosecond (ps) CARS are determined to be of the order of 1015 molecules/cm3. Here, the possible benefit of fs/nanosecond (ns) hybrid CARS is also discussed.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- NA0003525
- OSTI ID:
- 1855811
- Alternate ID(s):
- OSTI ID: 1854415
- Report Number(s):
- SAND2022-2756J; 704021
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 6 Vol. 47; ISSN 0146-9592
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hybrid fs/ps rotational CARS temperature and oxygen measurements in the product gases of canonical flat flames
Hybrid fs/ps CARS for Sooting and Particle-laden Flames
Journal Article
·
Tue Dec 30 19:00:00 EST 2014
· Combustion and Flame
·
OSTI ID:1183118
Hybrid fs/ps CARS for Sooting and Particle-laden Flames
Conference
·
Mon Nov 30 23:00:00 EST 2015
·
OSTI ID:1340209