TY - GEN
T1 - Effect of Raman scattering and mode coupling in Kerr comb generation in a silica whispering gallery mode microcavity
AU - Tanabe, Takasumi
AU - Kato, Takumi
AU - Fujii, Shun
AU - Suzuki, Ryo
AU - Hori, Atsuhiro
N1 - Publisher Copyright:
© 2017 SPIE.
PY - 2017
Y1 - 2017
N2 - We investigated the effect of Raman scattering in multimode whispering gallery mode (WGM) microcavities. First, we discuss the competition between the effects of four-wave mixing (FWM) and stimulated Raman scattering (SRS). Thanks to the different gain bandwidths of FWM and SRS, we can switch between the FWM and SRS dominant states by changing the pump power or by changing the coupling quality factor (Q). Next, we investigated the transverse mode interaction that occurs during SRS comb formation. We found that transverse mode coupling occurred when we pumped in a low-Q mode but a comb with a single-mode family was generated when we pumped in a high-Q mode. This finding will allow us to obtain or suppress a dual comb in a single WGM microcavity. Finally, we demonstrated broad bandwidth visible light generation by third harmonic generation (THG) following the generation of a broadband SRS comb. The generation and good understanding of the SRS comb will offer us various possibilities such as dual comb generation and broad bandwidth visible light generation.
AB - We investigated the effect of Raman scattering in multimode whispering gallery mode (WGM) microcavities. First, we discuss the competition between the effects of four-wave mixing (FWM) and stimulated Raman scattering (SRS). Thanks to the different gain bandwidths of FWM and SRS, we can switch between the FWM and SRS dominant states by changing the pump power or by changing the coupling quality factor (Q). Next, we investigated the transverse mode interaction that occurs during SRS comb formation. We found that transverse mode coupling occurred when we pumped in a low-Q mode but a comb with a single-mode family was generated when we pumped in a high-Q mode. This finding will allow us to obtain or suppress a dual comb in a single WGM microcavity. Finally, we demonstrated broad bandwidth visible light generation by third harmonic generation (THG) following the generation of a broadband SRS comb. The generation and good understanding of the SRS comb will offer us various possibilities such as dual comb generation and broad bandwidth visible light generation.
KW - Kerr comb
KW - Microcavity
KW - Optical nonlinearity
KW - Raman effect
KW - Whispering gallery mode
UR - https://www.scopus.com/pages/publications/85019452205
UR - https://www.scopus.com/pages/publications/85019452205#tab=citedBy
U2 - 10.1117/12.2250231
DO - 10.1117/12.2250231
M3 - Conference contribution
AN - SCOPUS:85019452205
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Laser Resonators, Microresonators, and Beam Control XIX 2017
A2 - Paxton, Alan H.
A2 - Ilchenko, Vladimir S.
A2 - Kudryashov, Alexis V.
PB - SPIE
T2 - Laser Resonators, Microresonators, and Beam Control XIX 2017
Y2 - 30 January 2017 through 2 February 2017
ER -