Wavelength-stabilized pump diodes for pumping gain media in an ultrashort pulsed laser system
US7245419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Sep 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/141
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an optical amplifier, passively wavelength-stabilized pump diodes generate pumping light to excite a gain medium (e.g., rare-earth-ion doped optical fiber or solid-state optical amplifier) near an absorption peak of the gain medium. The gain medium amplifies a pulsed laser signal coupled into the gain medium to a high peak power with minimal non-linear distortion. The gain medium may include a portion configured to receive the pumping light and another portion configured to amplify the pulsed laser signal. A volume phase hologram device may passively wavelength stabilize the pump diodes by reflecting a portion of the pumping light back to the pump diodes. Passively wavelength-stabilizing the pump diodes improves power efficiency of the optical amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.