Realization of an O-waveband laser based on cascaded stimulated Raman scattering of microspheres

Abstract

We report an experimental realization of five-order Stokes stimulated Raman scattering lasing in silica microspheres pumped by a 1030 nm continuous-wave laser. The wavelength of the Stokes Raman laser is extended to 1348.55 nm, which is located in the second low loss window of the optical fiber. It has potential applications in the wavelength converter and Raman amplifier in O-waveband optical communication. The minimum pump power is about 50 μW when the first-order Stokes Raman laser can be observed.

All-optical tuned optical micro-mushroom cavity resonance wavelength

“…Optical microcavities are integrated, low-loss, small resonant cavities that confine photons to tiny scales for long periods of time. The whisperingg gallery mode(WGM) microcavity has the characteristics of extremely high-quality factor (Q-value) and very small mode volume, so it has a very high power density (~GW / cm 2 ), which makes it widely studied in basic science and application fields [1], such as nonlinear optics [2,3], Ultrlalow-threshold laser [4], enhanced up-conversion luminescence [5.6], optical frequency comb and so on. In practical applications, WGM microcavities are often required to have a specific resonant wavelength or frequency, therefore, it is of great significance to study the frequency tuning of WGM microcavities.…”

Methane Sensor Based on High-Q Microsphere Whispering Gallery Mode

“…In order to improve the sensitivity, a long FP cavity gas chamber is required and the volume is large. Optical WGM microcavity has an ultra-high quality factor (Q =10 8 ) and extremely small mode volume, so it has a very high power density (GW / cm 2 ), which makes it widely studied in basic science and application fields [3], such as nonlinear optics [4,5], Ultrlalow-threshold laser [6], enhanced up-conversion luminescence [7.8], optical frequency comb [9],soliton [10] and so on. The WGM microcavity has a much higher Q value than the FP cavity, which means that the loss of light in the cavity is extremely low.…”