We fabricate a tapered fiber coupler, position it near an ultrahigh-Q resonator made from a microdroplet, and experimentally measure stimulated Raman emission. We then calculate the molecular vibrational mode associat...We fabricate a tapered fiber coupler, position it near an ultrahigh-Q resonator made from a microdroplet, and experimentally measure stimulated Raman emission. We then calculate the molecular vibrational mode associated with each of the Raman lines and present it in a movie. Our Raman laser lines show themselves at a threshold of 160 μW input power, the cold-cavity quality factor is 250 million, and mode volume is 23 μm^3. Both pump and Raman laser modes overlap with the liquid phase instead of just residually extending to the fluid.展开更多
基金the Israeli Center for Research Excellence“Circle of Light”grant No.1802/12,the Israel Science Foundation(2013/15),the Israel Ministry of Science,Technology and Space.We thank Dr.Rachel Edrie for her help with the Raman spectrum measurement.
文摘We fabricate a tapered fiber coupler, position it near an ultrahigh-Q resonator made from a microdroplet, and experimentally measure stimulated Raman emission. We then calculate the molecular vibrational mode associated with each of the Raman lines and present it in a movie. Our Raman laser lines show themselves at a threshold of 160 μW input power, the cold-cavity quality factor is 250 million, and mode volume is 23 μm^3. Both pump and Raman laser modes overlap with the liquid phase instead of just residually extending to the fluid.