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Title: Noncolinear optical parametric oscillator for broadband nanosecond pulse-burst CARS diagnostics in gases

Journal Article · · Optics Letters
DOI:https://doi.org/10.1364/ol.455526· OSTI ID:1882901
ORCiD logo [1];  [1];  [2];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. AS-Photonics, LLC, Albuquerque, NM (United States)
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Demonstration of broadband nanosecond coherent anti-Stokes Raman scattering (CARS) using a burst-mode-pumped noncolinear optical parametric oscillator (NOPO) has been achieved at a pulse repetition rate of 40 kHz. The NOPO is pumped with the 355-nm output of a burst-mode Nd:YAG laser at 50 mJ/pulse for 45 pulses and produces an output centered near 607 nm, with a bandwidth of 370 cm −1 at energies of 5 mJ/pulse. A planar BOXCARS phase matching scheme uses the broadband NOPO output as the Stokes beam and the narrowband 532-nm burst-mode output for the two CARS pump beams for single-laser-shot nitrogen thermometry in near adiabatic H 2 /air flames at temperatures up to 2200 K.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
NA0003525
OSTI ID:
1882901
Alternate ID(s):
OSTI ID: 1860419
Report Number(s):
SAND2022-2979J; 704143
Journal Information:
Optics Letters, Vol. 47, Issue 7; ISSN 0146-9592
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English

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