Chirped pulse amplification laser system
US11444425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Apr 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The ultra-short pulse chirped pulse amplification (CPA) laser system and method of operating CPA laser system include outputting nearly transform limited (TL) pulses by a mode locked laser. The system and method further include temporarily stretching the TL pulses by a first Bragg grating providing thus each stretched pulse with a chirp which is further compensated for in a second Bragg grating operating as as a compressor. The laser system and method further include a pulse shaping unit measuring a spectral phase across the recompressed pulse and further adjusting the deviation of the measured spectral phase from that of the TL pulse by generating a corrective signal. The corrective signal is applied to the array of actuators coupled to respective segments of one of the BGs which are selectively actuated to induce the desired phase change, with the one BG thus operating as both stretcher/compressor and pulse shaper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.