{"title":"弱激光脉冲的正反馈放大","authors":"Yuanzhuang Bu , Bin Zhang , Jing Hou","doi":"10.1016/j.optlastec.2025.112828","DOIUrl":null,"url":null,"abstract":"<div><div>Pulsed fiber amplifiers are essential components of high-power pulsed fiber laser systems. To the best of our knowledge, we first propose a type of positive-feedback pulsed fiber amplifier to efficiently amplify weak laser pulses. Positive-feedback mechanism is actively established by the backward time-shifted superposition of seed pulses and feedback pulses. Since the greatly enhanced net input pulses can consume more excited particles to promote excited radiation and suppress spontaneous radiation, our positive-feedback pulsed fiber amplifier achieves a unique near-exponential growth in power curve, higher single-stage gain (17.4 dB, increase of 5.1 dB), and higher pump-to-signal conversion efficiency (19.1 %, increase of 14.6 %) than conventional pulsed fiber amplifiers.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"187 ","pages":"Article 112828"},"PeriodicalIF":5.0000,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Positive-feedback amplification of weak laser pulses\",\"authors\":\"Yuanzhuang Bu , Bin Zhang , Jing Hou\",\"doi\":\"10.1016/j.optlastec.2025.112828\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Pulsed fiber amplifiers are essential components of high-power pulsed fiber laser systems. To the best of our knowledge, we first propose a type of positive-feedback pulsed fiber amplifier to efficiently amplify weak laser pulses. Positive-feedback mechanism is actively established by the backward time-shifted superposition of seed pulses and feedback pulses. Since the greatly enhanced net input pulses can consume more excited particles to promote excited radiation and suppress spontaneous radiation, our positive-feedback pulsed fiber amplifier achieves a unique near-exponential growth in power curve, higher single-stage gain (17.4 dB, increase of 5.1 dB), and higher pump-to-signal conversion efficiency (19.1 %, increase of 14.6 %) than conventional pulsed fiber amplifiers.</div></div>\",\"PeriodicalId\":19511,\"journal\":{\"name\":\"Optics and Laser Technology\",\"volume\":\"187 \",\"pages\":\"Article 112828\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2025-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics and Laser Technology\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0030399225004190\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/3/17 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399225004190","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/17 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
Positive-feedback amplification of weak laser pulses
Pulsed fiber amplifiers are essential components of high-power pulsed fiber laser systems. To the best of our knowledge, we first propose a type of positive-feedback pulsed fiber amplifier to efficiently amplify weak laser pulses. Positive-feedback mechanism is actively established by the backward time-shifted superposition of seed pulses and feedback pulses. Since the greatly enhanced net input pulses can consume more excited particles to promote excited radiation and suppress spontaneous radiation, our positive-feedback pulsed fiber amplifier achieves a unique near-exponential growth in power curve, higher single-stage gain (17.4 dB, increase of 5.1 dB), and higher pump-to-signal conversion efficiency (19.1 %, increase of 14.6 %) than conventional pulsed fiber amplifiers.
期刊介绍：
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
