Influence of optical loss on nonlinear effect in stimulated Raman scattering system

Author(s):  
Wang Zhen ◽  
Gu Jilin ◽  
Qin Siyu

In this paper, based on the ideal stimulated Raman coupling equation, the dynamic output state is investigated. Considering the gain and loss of stimulated Raman scattering in the actual situation, the ideal stimulated Raman coupling equation is modified. Furthermore, the influence of optical loss on the nonlinear effect in the stimulated Raman scattering system has been analyzed. The results show that, considering the gain and loss of the system, the dynamic output of the stimulated Raman coupling equation presents stable periodic oscillation and random oscillation.

2019 ◽  
Vol 27 (12) ◽  
pp. 2509-2516
Author(s):  
刘 盼 LIU Pan ◽  
张天舒 ZHANG Tian-shu ◽  
范广强 FAN Guang-qiang ◽  
孙新会 SUN Xin-hui ◽  
董云升 DONG Yun-sheng

2019 ◽  
Vol 1367 ◽  
pp. 012064
Author(s):  
Hefans Akhmed Arafat ◽  
Eko Fajar Cahyadi ◽  
Dodi Zulherman ◽  
Dadiek Pranindito ◽  
Min-Shiang Hwang

2016 ◽  
Vol 56 (1) ◽  
Author(s):  
Kipras Redeckas ◽  
Vladislava Voiciuk ◽  
Mikas Vengris

In this work we present a femtosecond stimulated Raman scattering system. The setup is based on a commercial femtosecond laser system supplemented by a pair of travelling-wave optical parametric amplifiers. One of the parametric amplifiers is used to generate the femtosecond actinic pump pulses, whereas the output of the other (high-power) parametric amplifier undergoes a combination of spectrally narrowed second harmonic generation in a long non-linear crystal and subsequent spectral filtering for the generation of narrowband Raman pump pulses. Chirped white light supercontinuum is used as the Raman probe. The setup offers tunability of the Raman pump pulses in the 400–800 nm range, and spectral and temporal resolutions of ca. 6 cm–1 and ca. 70 fs, respectively. We present the basic technical and optical aspects of the system along with data acquisition and signal retrieval techniques. We characterize the system by exploring the time-resolved vibrational dynamics of the S2(11Bu+) and S1(21Ag–) excited states of β-carotene.


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