Chinese Optics Letters, Vol. 7, Issue 6, 06495 (2009)
A high-efficiency Brillouin fiber ring laser
Pingping Zhang, Shuling Hu, Shuying Chen, Yuanhong Yang, and Chunxi Zhang
- School of Instrument Science and Opto-Electronics Engineering, Beijing University of Astronomic and Astronautic, Beijing 100191, China
A high-efficiency Brillouin fiber ring laser is demonstrated using the standard single-mode fiber. The laser exhibits a 3.6-mW threshold. The output power is 22 mW with 40-mW pump power, and the maximum optical-to-optical efficiency is 55%. The output is single wavelength with a 3-dB linewidth of 5 MHz, and the interval of center frequency between the laser and the pump light is 11 GHz (0.088 nm). It is shown that the stimulated Brillouin scattering threshold of ring resonator is lower and the energy transfer efficiency is higher than those in fiber.