Wavelength and intensity stabilized laser diode and application of same to pumping solid-state lasers
US7606273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2007 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Jan 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0652
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source stable in both spectrum and intensity, in conjunction with automatic power control wherein the feedback loop accurately reflects the true drift in the output power. Moreover, the pump efficiency is optimized and the optical noise is minimized by adjusting the diode operation temperature such that the pump wavelength coincides with the absorption peak of the gain medium. By internally or externally modulating the amplitude of the drive current, the pump diode(s) operate in pulsed mode with controllable shape, width, repetition rate, and pulse-to-pulse intervals, which enables essentially constant optical energy produced from each pulse of the solid-state laser in high repetition rates with variable pulse-to-pulse intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.