Noncolinear optical parametric oscillator for broadband nanosecond pulse-burst CARS diagnostics in gases
Optics Letters, 2022•opg.optica.org
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 …
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 …
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.
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