High power femtosecond laser with adjustable repetition rate and simplified structure
US8279901B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Feb 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1075
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Designs and techniques for constructing and operating femtosecond pulse lasers are provided. One example of a laser engine includes an oscillator that generates and outputs a beam of femtosecond seed pulses, a stretcher-compressor that stretches a duration of the seed pulses, and an amplifier that receives the stretched seed pulses, amplifies an amplitude of selected stretched seed pulses to create amplified stretched pulses, and outputs a laser beam of amplified stretched pulses back to the stretcher-compressor that compresses their duration and outputs a laser beam of femtosecond pulses. The amplifier includes a dispersion controller that compensates a dispersion of the amplified stretched pulses, making the repetition rate of the laser adjustable between procedures or according to the speed of scanning. The laser engine can be compact with a total optical path of less than 500 meters, and have a low number of optical elements, e.g. less than 50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.