本文对高重频窄脉宽多波长激光器的可靠性进行了分析及验证,建立了高重频窄脉宽多波长激光器的框图法模型.在初始设计阶段开展激光器的可靠性分析,定量计算了激光器各单元的可靠性结果,包括失效率λ和平均无故障工作时间(Mean Time Between Failure,MTBF),预计激光器整机的无故障工作时间为1 798.8 h.为满足激光器的设计指标要求,通过选用高品质晶体、半导体激光器的Ⅰ级降额设计和电源控制的冗余设计,实现激光器的可靠性优化.经优化设计后,激光器整机的无故障工作时间达2 260.9 h.搭建激光器整机对可靠性优化设计结果进行验证,验证结果表明:激光器无故障工作时间可达2 400 h.
Reliability Analysis of High Repetition Frequency and Narrow Pulse Width Multi-wavelength Laser Technology
This article analyzes and verifies the reliability of high repetition rate narrow pulse width multi-wavelength lasers.A block diagram method model of high repetition rate narrow pulse width multi-wavelength lasers was established,and reliability analysis of the laser was conducted at the initial design stage.The reliability results of each unit of the laser were quantitatively cal-culated,including failure rate λ and Mean Time Between Failures(MTBF),with an expected MTBF of the entire laser system being 1 798.8 hours.To meet the design requirements of the laser,reliability optimization of the laser was achieved through selecting high-quality crystals,first-level derating design of semiconductor lasers,and redundant design of power control.After optimization,the MTBF of the entire laser system was increased to 2 260.9 hours.The reliability optimization design results of the laser system were validated,and the validation results showed that the laser's MTBF could reach 2 400 hours.
High repetition frequencyNarrow pulse widthLaserReliabilityBlock diagram method
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