公开(公告)号：WO2013154949A3

公开(公告)日：2013-12-05

申请号：PCT/US2013035530

申请日：2013-04-05

Applicant: COHERENT INC

Inventor： ROSENTHAL PETER ,  KENNEDY JOHN ,  SEGUIN VERN ,  ALLIE DAVID

IPC: H01S3/104 ,  H01S3/097 ,  H01S3/10 ,  H01S3/223

CPC classification number: H01S3/104 ,  H01S3/09705 ,  H01S3/10046 ,  H01S3/10069 ,  H01S3/2232

Abstract: In order to maintain a constant laser output pulse power in a RF-energized, sealed-off, diffusion cooled, pulsed, CO2 gas-discharge laser (160), each laser output pulse is generated by train or burst of shorter RF pulses. When the time between laser output pulses (176) becomes short enough that the power in one pulse would be reduced by gas-discharge heating effects of a previous pulse, power in the RF pulse trains (164) is varied by varying the duration or duty cycle of pulses in the bursts, thereby keeping output-pulse power in the laser output pulses constant. RF pulses in any burst can have a different duration for tailoring the temporal shape of a corresponding laser-output pulse.

Abstract translation: 为了在射频激励密封的扩散冷却的脉冲CO2气体放电激光器（160）中保持恒定的激光输出脉冲功率，每个激光输出脉冲由更短的RF脉冲的串联或脉冲串产生。 当激光输出脉冲（176）之间的时间变得足够短以致通过先前脉冲的气体放电加热效应将一个脉冲中的功率降低时，RF脉冲序列（164）中的功率通过改变持续时间或占空比来改变 在脉冲串中的脉冲周期，从而保持激光输出脉冲中的输出脉冲功率恒定。 任何脉冲串中的RF脉冲可以具有不同的持续时间，用于调整对应的激光输出脉冲的时间形状。