| 发明名称 |
High power femtosecond laser with adjustable repetition rate |
| 摘要 |
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. |
| 申请公布号 |
US9054479(B2) |
申请公布日期 |
2015.06.09 |
| 申请号 |
US201012712051 |
申请日期 |
2010.02.24 |
| 申请人 |
Alcon LenSx, Inc. |
发明人 |
Karavitis Michael |
| 分类号 |
H01S3/08;H01S3/00;H01S3/081;A61F9/008;H01S3/067;H01S3/23 |
主分类号 |
H01S3/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A variable repetition rate laser engine, comprising:
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 from the stretcher-compressor,amplifies an amplitude of selected stretched seed pulses to create amplified stretched pulses, andoutputs a laser beam of amplified stretched pulses; wherein the stretcher-compressor
receives the laser beam of amplified stretched pulses,compresses a duration of the amplified stretched pulses, andoutputs a laser beam of femtosecond pulses with a pulse duration of less than 1,000 femtoseconds; and the amplifier comprises a dispersion compensator that reduces a dispersion of the amplified stretched pulses, caused by optical elements of the amplifier and an electro-optical switchable polarizer, configured to operate at a repetition rate in the range of 50 kHz-1 MHz; wherein
the laser engine outputs a laser beam with an output power greater than 0.1 W. |
| 地址 |
Aliso Viejo CA US |
