Power stabilization of semiconductor laser harmonic frequency conversion modules
US7518786B2 · kind B2 · utility
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10References
3Claims
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Assignee
Inventor
Key dates
| Filing date | Nov 26, 2007 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Nov 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a fiber laser and harmonic frequency conversion module incorporating a 90 degree Polarization Maintaining (PM) fiber fusion splice therebetween for providing temperature insensitive power stabilization. The present invention has found that incorporating at least one 90 degree splice of the transmission axes of the PM fiber, coupling a fast axis to a slow axis, to create substantially equal optical path lengths of the two transmission axes of the fiber coupling can nearly eliminate output amplitude fluctuation within a practical operating temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.