公开(公告)号：US06760356B2

公开(公告)日：2004-07-06

申请号：US10118292

申请日：2002-04-08

申请人： Gaylen V. Erbert ,  Subrat Biswal ,  Joseph M. Bartolick ,  Brent C. Stuart ,  John K. Crane ,  Steve Telford ,  Michael D. Perry

发明人： Gaylen V. Erbert ,  Subrat Biswal ,  Joseph M. Bartolick ,  Brent C. Stuart ,  John K. Crane ,  Steve Telford ,  Michael D. Perry

IPC分类号： H01S3081

CPC分类号： H01S3/0057 ,  H01S3/1643

摘要： A diode pumped, high power (at least 20W), short pulse (up to 2 ps), chirped pulse amplified laser using Yb:YAG as the gain material is employed for material processing. Yb:YAG is used as the gain medium for both a regenerative amplifier and a high power 4-pass amplifier. A single common reflective grating optical device is used to both stretch pulses for amplification purposes and to recompress amplified pulses before being directed to a workpiece.

摘要翻译： 使用Yb：YAG作为增益材料的二极管泵浦，高功率（至少20W），短脉冲（高达2ps），啁啾脉冲放大激光器用于材料处理。 Yb：YAG用作再生放大器和高功率4通放大器的增益介质。 单个公共反射光栅光学装置用于拉伸脉冲以用于放大目的，并且在被引导到工件之前重新压缩放大的脉冲。

公开(公告)号：US06739728B2

公开(公告)日：2004-05-25

申请号：US10117744

申请日：2002-04-08

申请人： Gaylen V. Erbert ,  Subrat Biswal ,  Joseph M. Bartolick ,  Brent C. Stuart ,  Steve Telford

发明人： Gaylen V. Erbert ,  Subrat Biswal ,  Joseph M. Bartolick ,  Brent C. Stuart ,  Steve Telford

IPC分类号： G02B2744

CPC分类号： G02B27/4233 ,  G02B17/004 ,  H01S3/0057 ,  Y10S359/90

摘要： The present invention provides an easily aligned, all-reflective, aberration-free pulse stretcher-compressor in a compact geometry. The stretcher-compressor device is a reflective multi-layer dielectric that can be utilized for high power chirped-pulse amplification material processing applications. A reflective grating element of the device is constructed: 1) to receive a beam for stretching of laser pulses in a beam stretcher beam path and 2) to also receive stretched amplified pulses to be compressed in a compressor beam path through the same (i.e., common) reflective multilayer dielectric diffraction grating. The stretched and compressed pulses are interleaved about the grating element to provide the desired number of passes in each respective beam path in order to achieve the desired results.

摘要翻译： 本发明提供了一种紧凑型几何形状中容易对准，全反射，无像差的脉冲拉伸 - 压缩机。 担架压缩机装置是可用于高功率啁啾脉冲放大材料处理应用的反射多层电介质。 该装置的反射光栅元件被构造为：1）接收用于在束拉伸束路径中拉伸激光脉冲的光束，以及2）还可以在压缩机的光束路径中接收被压缩的经延伸的放大脉冲（即， 常见）反射多层介质衍射光栅。 拉伸和压缩的脉冲围绕光栅元件交错，以在每个相应光束路径中提供期望数量的通过，以便获得期望的结果。