| 摘要 |
Single longitudinal mode solid-state laser comprises solid-state laser and single-mode optical fiber, which Bragg grating is written on, as an external cavity. In one embodiment, the multimode laser is coupled from solid-state laser by lens system into external cavity which includes the optical fiber with Bragg grating written on. In the other embodiment, the multimode laser is coupled from solid-state laser directly into the external cavity which includes lensed optical fiber with Bragg grating written on. The Bragg grating selects lasing wavelength and discriminates against lasing of the other longitudinal modes in the multimode gain region. The solid-state laser with fiber Bragg grating external cavity generates single longitudinal mode laser with narrow spectrum and high side mode suppression ratio. The method is very simple and cost-effective.
|
