TY - JOUR
T1 - Stimulated Rotational Raman Scattering in the Atmosphere
AU - Rokni, Mordechai
AU - Flusberg, Allen
PY - 1986/7
Y1 - 1986/7
N2 - Theoretical and experimental information in the literature is used to calculate the gain coefficient for stimulated rotational Raman scattering by atmospheric N2 and O2. The dependence on laser wavelength and polarization, as well as on the pressure and altitude is discussed. It is pointed out that because of pressure broadening, the gain coefficient is independent of altitude up to an altitude of 40-50 km, where the Raman transition becomes Doppler broadened. The 1 percent conversion threshold for vertical propagation from the ground up is calculated for various transitions and laser beam characteristics. The highest-gain transition, the S(8) transition of N2, is shown to have a 1 percent conversion intensity threshold of ~1.2 MW/cm2 for linearly polarized light at a wavelength of 400 nm.
AB - Theoretical and experimental information in the literature is used to calculate the gain coefficient for stimulated rotational Raman scattering by atmospheric N2 and O2. The dependence on laser wavelength and polarization, as well as on the pressure and altitude is discussed. It is pointed out that because of pressure broadening, the gain coefficient is independent of altitude up to an altitude of 40-50 km, where the Raman transition becomes Doppler broadened. The 1 percent conversion threshold for vertical propagation from the ground up is calculated for various transitions and laser beam characteristics. The highest-gain transition, the S(8) transition of N2, is shown to have a 1 percent conversion intensity threshold of ~1.2 MW/cm2 for linearly polarized light at a wavelength of 400 nm.
UR - http://www.scopus.com/inward/record.url?scp=0022752215&partnerID=8YFLogxK
U2 - 10.1109/JQE.1986.1073083
DO - 10.1109/JQE.1986.1073083
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0022752215
SN - 0018-9197
VL - 22
SP - 1102
EP - 1108
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 7
ER -