Efficient frequency conversion by stimulated Raman scattering in a sodium nitrate aqueous solution
- Department of Engineering, Sapir Academic College, D. N. Hof Ashkelon 79165 (Israel)
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105 (Israel)
Frequency conversion of laser beams, based on stimulated Raman scattering (SRS) is an appealing technique for generating radiation at new wavelengths. Here, we investigated experimentally the SRS due to a single pass of a collimated frequency-doubled Nd:YAG laser beam (532 nm) through a saturated aqueous solution of sodium nitrate (NaNO{sub 3}), filling a 50 cm long cell. These experiments resulted in simultaneous generation of 1st (564 nm) and 2nd (599 nm) Stokes beams, corresponding to the symmetric stretching mode of the nitrate ion, ν{sub 1}(NO{sub 3}{sup −}), with 40 and 12 mJ/pulse maximal converted energies, equivalent to 12% and 4% efficiencies, respectively, for a 340 mJ/pulse pump energy. The results indicate that the pump and SRS beams were thermally defocused and that four-wave mixing was responsible for the second order Stokes process onset.
- OSTI ID:
- 22482157
- Journal Information:
- Applied Physics Letters, Vol. 107, Issue 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stimulated Raman scattering at kHz-pulse-repetition rates. Final report, May 1976-January 1977
Efficient conversion of Nd:YAG laser radiationto the eye-safe spectral region by stimulated Raman scatteringin BaWO{sub 4} crystal