Interference filter type external cavity semiconductor laser
By designing a self-aligned interference filter-type external cavity semiconductor laser, a variety of functions and adjustment methods are integrated, the existing lasers are solved for environmental disturbances, and the higher frequency stability and narrower line width are achieved, which are suitable for severe vibration conditions.
Patent Information
- Application Number
- CN202420968747.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing external cavity grating feedback semiconductor lasers need to be precisely aligned during debugging, which is sensitive to optical distortion caused by environmental pressure, acoustic and mechanical disturbances, thermal deformation, and noise environments, and is difficult to meet the rigorous vibration conditions such as transportation and rocket launch.
An interference filter-type external cavity semiconductor laser is designed, adopting a self-aligning structure, integrating cavity long temperature control, laser beam expansion collimation, laser diode LD temperature control and monitoring, external cavity output frequency tuning, laser mode selection, laser frequency stability and spatial light adjustment, and using multi-layer piezoelectric ring actuator PZT and cavity length adjustment piezoelectric ceramic PZT to achieve frequency tuning and wavelength adjustment of the laser.
The laser is miniaturized, the structural force and thermal stability is high, the wavelength sensitivity and external cavity feedback, frequency noise, and vibration sensitivity are reduced, and the frequency stability and narrower line width are also achieved, meeting the strict conditions such as transportation and rocket launch.