Title :
Infrared Raman solitons, self-phase modulation and self focusing in CO2-laser pumped NH3
Author :
Baumgartner, M.O. ; Kneubühl, F.K.
Author_Institution :
Inst. of Quantum Electron., Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
Stimulated Raman scattering is a nonlinear process, that has been studied extensively by many groups. Nevertheless, the presence of soliton-like pulses in the depletion region of the pump pulse is not yet completely understood. The origin of such spontaneous solitons is the rapid phase variation of the Stokes field induced by the quantum fluctuations of the electromagnetic field in vacuum. With the aid of a pulsed CO2 laser system including a fast plasma shutter we have observed the first spontaneous Raman solitons in the forward stimulated Raman scattering (SRS) by the far-infrared-active laser gas NH3
Keywords :
ammonia; optical pumping; optical self-focusing; optical solitons; self-phase modulation; stimulated Raman scattering; CO2 laser pumping; NH3; NH3 far-infrared-active laser gas; infrared Raman soliton; nonlinear process; self-focusing; self-phase modulation; stimulated Raman scattering; Elementary particle vacuum; Finite impulse response filter; Laser transitions; Pulse measurements; Pump lasers; Raman scattering; Refractive index; Solitons; Stimulated emission; Wavelength measurement;
Conference_Titel :
Physics and Engineering of Millimeter and Submillimeter Waves, 1998. MSMW '98. Third International Kharkov Symposium
Conference_Location :
Kharkov
Print_ISBN :
0-7803-5553-9
DOI :
10.1109/MSMW.1998.758931
