A novel technique of lidar for atmospheric gas detection by use of stimulated Raman gain spectroscopy without any tunable laser is proposed. Detection sensitivity and detectable range are estimated on the basis of the lidar equation for CO<sub>2</sub>, CH<sub>4</sub>, and H<sub>2</sub> in the atmosphere. The feasibility study clearly shows that the technique has a potential for application to lidar and that, in addition, the construction of the system is simpler than those of traditional differential absorption lidars.
© 2002 Optical Society of America
Nilesh J. Vasa, Akihiro Hatada, Shinichiro Nakazono, Yuji Oki, and Mitsuo Maeda, "Feasibility of Nonlinear Raman Lidar Based on Stimulated Raman Gain Spectroscopy Without a Tunable Laser," Appl. Opt. 41, 2328-2332 (2002)