@inproceedings{ccf488deb2ed4bf1929eff2780dbe132,
title = "Micro-sphere resonator reflector for fiber laser",
abstract = "We show that a glass micro-sphere resonator can be used as a wavelength-selective mirror in fiber lasers. Due to their high quality-factor (Q ∼108), microsphere resonators possess a narrow reflection bandwidth. This feature enables construction of single-frequency fiber lasers even when the cavity is long. We also propose and demonstrate an active Q-switched fiber laser using a high-Q micro-sphere resonator as the Q-switching element. The laser cavity consists of an Erdoped fiber as the gain medium, a glass micro-sphere reflector (coupled through a fiber taper) at one end of the cavity, and a fiber Bragg grating reflector at the other end. The reflectivity of the micro-sphere is modulated by changing the gap between the micro-sphere and the fiber taper. Active Q-switching is realized by oscillating the micro-sphere in and out of contact with the taper. Nonlinear effects (such as stimulated Raman lasing) were also observed in our setup at relatively low pump powers.",
author = "Khanh Kieu and Masud Mansuripur",
year = "2007",
doi = "10.1117/12.703252",
language = "English (US)",
isbn = "0819465658",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Laser Resonators and Beam Control IX",
note = "Laser Resonators and Beam Control IX ; Conference date: 22-01-2007 Through 24-01-2007",
}