Working principle of Stimulated Raman Scattering driven by femtosecond-pulse burst. (IMAGE)
Caption
(a) Schematic diagram of the pump burst and the Stokes burst in the time domain. N: number of pulses in burst. ∆τ: inter-pulse temporal separation. φ: pulse-to-pulse offset phase. ΩR: Raman frequency. (b) The comb peaks belonging to the pump burst and the Stokes burst move in the opposite direction due to phase conjugation when the offset phase changes. (c) In the case of resonance, the comb peak frequency difference matches the Raman frequency, leading to significant Stimulated Raman Gain and Stimulated Raman Loss. (d) For the off-resonance case, the Raman process is strongly suppressed. (e) Simultaneous stimulated Raman on-resonance is achieved by multiple pumps and Stokes comb frequencies.
Credit
by Hongtao Hu, Tobias Flöry, Vinzenz Stummer, Audrius Pugzlys, Markus Zeiler, Xinhua Xie, Alexei Zheltikov, Andrius Baltuška
Usage Restrictions
Credit must be given to the creator.
License
CC BY