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1. (WO2018035806) DUAL-FREQUENCY OPTICAL SOURCE DEVICE

Pub. No.:    WO/2018/035806    International Application No.:    PCT/CN2016/096710
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Aug 26 01:59:59 CEST 2016
IPC: H01S 3/08
Applicants: SHENZHEN UNIVERSITY
深圳大学
Inventors: WEN, Qiao
文侨
LIANG, Guowen
梁国文
LI, Ji
李冀
Title: DUAL-FREQUENCY OPTICAL SOURCE DEVICE
Abstract:
A dual-frequency optical source device, comprising a pump unit (10), a coupling unit (20), and a resonant cavity unit. The resonant cavity unit comprises a common optical path section and a non-common optical path section. A gain medium (30) is provided at the common optical path section. The non-common optical path section comprises a first polarization section (401) and a second polarization section (402) configured for independent transmission and having different optical path lengths. Laser beams are transmitted in the first polarization section (401) and the second polarization section (402) in different polarization directions. The common optical path section and first polarization section (401) form a first resonant cavity. The common optical path section and second polarization section (402) form a second resonant cavity. The dual-frequency optical source device further comprises an output unit (50) used to output a laser beam of a first frequency generated by the first resonant cavity and a laser beam of a second frequency generated by the second resonant cavity. By employing the special resonant cavity unit, and sharing the pump unit (10) and gain medium (30) between the two resonant cavities, the dual-frequency optical source device of the present invention generates laser beams of different frequencies, and enables heterodyne interference with laser beams of two frequencies, thus facilitating frequency adjustment, providing a large frequency range for adjustment, and having excellent resistance to interference.