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2019 IEEE High Power Diode Lasers and Systems Conference (HPD)最新文献

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High luminous flux laser lighting using single-crystal Ce:YAG phosphor 采用单晶Ce:YAG荧光粉的高光通量激光照明
2019 IEEE High Power Diode Lasers and Systems Conference (HPD) Pub Date : 2019-10-01 DOI: 10.1109/hpd48113.2019.8938604
A. Krasnoshchoka, Jian Xu, A. Thorseth, C. Dam-Hansen, O. B. Jensen
{"title":"High luminous flux laser lighting using single-crystal Ce:YAG phosphor","authors":"A. Krasnoshchoka, Jian Xu, A. Thorseth, C. Dam-Hansen, O. B. Jensen","doi":"10.1109/hpd48113.2019.8938604","DOIUrl":"https://doi.org/10.1109/hpd48113.2019.8938604","url":null,"abstract":"Laser lighting is rapidly becoming a viable alternative to LEDs in many applications. However, the high power density from the lasers put strict requirements on the phosphor materials used for downconverting the blue laser light. Here we demonstrate high efficiency white light generation using single-crystal Ce:YAG phosphors. More than 4700 lm is achieved using 30 W of incident blue laser light.","PeriodicalId":384472,"journal":{"name":"2019 IEEE High Power Diode Lasers and Systems Conference (HPD)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121461352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
High pulse power wavelength stabilized 905 nm laser bars for automotive LiDAR 用于汽车激光雷达的高脉冲功率波长稳定的905 nm激光棒
2019 IEEE High Power Diode Lasers and Systems Conference (HPD) Pub Date : 2019-10-01 DOI: 10.1109/hpd48113.2019.8938682
H. Wenzel, A. Klehr, A. Liero, H. Christopher, J. Fricke, A. Maaßdorf, A. Zeghuzi, A. Knigge
{"title":"High pulse power wavelength stabilized 905 nm laser bars for automotive LiDAR","authors":"H. Wenzel, A. Klehr, A. Liero, H. Christopher, J. Fricke, A. Maaßdorf, A. Zeghuzi, A. Knigge","doi":"10.1109/hpd48113.2019.8938682","DOIUrl":"https://doi.org/10.1109/hpd48113.2019.8938682","url":null,"abstract":"Key components of LiDAR (Light Detection and Ranging) systems, e.g., for autonomous driving and robotics are diode lasers capable of generating nanoseconds-long optical pulses with peak powers of 100 W and more. We present here an internally wavelength stabilized distributed Bragg reflector (DBR) broad area (BA) laser bar with 48 emitters electrically driven by a new in-house developed high-speed driver based on GaN transistors providing electrical pulses with peak currents of up to 1000 A and a repetition frequency of10 kHz. The generated 4 ns to 10 ns long optical pulses are nearly rectangular shaped and reach a pulse peak power in excess of600 Watts at 25o C. The optical spectrum of a single emitter with a center wavelength of about 900 nm has a width of 0.6 nm with a side mode suppression ratio gt 30dB.","PeriodicalId":384472,"journal":{"name":"2019 IEEE High Power Diode Lasers and Systems Conference (HPD)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127075872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Frequency stabilization of multimode diode lasers with fiber Bragg gratings 光纤布拉格光栅多模二极管激光器的频率稳定
2019 IEEE High Power Diode Lasers and Systems Conference (HPD) Pub Date : 2019-10-01 DOI: 10.1109/hpd48113.2019.8938607
S. Klein, M. Giesberts, M. Traub, O. Fitzau, D. Hoffmann
{"title":"Frequency stabilization of multimode diode lasers with fiber Bragg gratings","authors":"S. Klein, M. Giesberts, M. Traub, O. Fitzau, D. Hoffmann","doi":"10.1109/hpd48113.2019.8938607","DOIUrl":"https://doi.org/10.1109/hpd48113.2019.8938607","url":null,"abstract":"We present the frequency stabilization of a multimode diode laser single emitter at 1074.8 nm by use of fiber Bragg gratings in a 105/125 $mu$m NA 0.22 fiber that is spliced to the output fiber of the diode laser. At 25o C, the spectral full width at half maximum decreases from 4.6 nm in the free-running configuration to 1.1 nm using an FBG with a reflectivity of R=0.07, the thermal drift decreases from 2.12 nm/W to 0.45 nm/W. The optical output power at 10 A with frequency stabilization is 6.6 W compared to 6.7 W without FBG, hence the loss amounts to less than 3%. We compare the results for two different FBG-reflectivities and operate the diode laser at 25o C and 30o C. The FBGs are directly written into the multimode fibers with an ultra-fast laser (100 fs, 800 nm) and the phase mask technique.","PeriodicalId":384472,"journal":{"name":"2019 IEEE High Power Diode Lasers and Systems Conference (HPD)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127110683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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