An Efficiency Improvement Driver for Master Oscillator Power Amplifier Pulsed Laser Systems
The master oscillator power amplifier (MOPA) pulsed laser, one of the popular topologies for high-power fiber laser systems, is widely applied in industrial machining laser systems. In MOPA, the low-power pulsed laser, stimulated from a seed laser diode, is amplified by the high- power optical energ...
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| Veröffentlicht in: | Processes 2022-06, Vol.10 (6), p.1197 |
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| creator | Chen, Fu-Zen Song, Yu-Cheng Ho, Fu-Shun |
| description | The master oscillator power amplifier (MOPA) pulsed laser, one of the popular topologies for high-power fiber laser systems, is widely applied in industrial machining laser systems. In MOPA, the low-power pulsed laser, stimulated from a seed laser diode, is amplified by the high- power optical energy from pump laser diodes via the gain fiber. Generally, the high-power pump laser diodes are driven by lossy linear current drivers. The switched mode current drivers boost the driver efficiency but suffer from pulse energy consistency due to the current switching ripple. In this paper, a laser driver system that varies the switching frequency of current source to synchronize with pulsed laser repetition rate is analyzed and implemented. Experimental results are demonstrated using a 20 W pulsed fiber laser system. |
| doi_str_mv | 10.3390/pr10061197 |
| format | Article |
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In MOPA, the low-power pulsed laser, stimulated from a seed laser diode, is amplified by the high- power optical energy from pump laser diodes via the gain fiber. Generally, the high-power pump laser diodes are driven by lossy linear current drivers. The switched mode current drivers boost the driver efficiency but suffer from pulse energy consistency due to the current switching ripple. In this paper, a laser driver system that varies the switching frequency of current source to synchronize with pulsed laser repetition rate is analyzed and implemented. Experimental results are demonstrated using a 20 W pulsed fiber laser system.</description><identifier>ISSN: 2227-9717</identifier><identifier>EISSN: 2227-9717</identifier><identifier>DOI: 10.3390/pr10061197</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Amplifiers ; Current sources ; Efficiency ; Energy ; Fiber lasers ; Lasers ; Machining ; Master oscillator/power amplifier ; Power supply ; Pulsed lasers ; Semiconductor lasers ; Switching ; Topology</subject><ispartof>Processes, 2022-06, Vol.10 (6), p.1197</ispartof><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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In MOPA, the low-power pulsed laser, stimulated from a seed laser diode, is amplified by the high- power optical energy from pump laser diodes via the gain fiber. Generally, the high-power pump laser diodes are driven by lossy linear current drivers. The switched mode current drivers boost the driver efficiency but suffer from pulse energy consistency due to the current switching ripple. In this paper, a laser driver system that varies the switching frequency of current source to synchronize with pulsed laser repetition rate is analyzed and implemented. Experimental results are demonstrated using a 20 W pulsed fiber laser system.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/pr10061197</doi><oa>free_for_read</oa></addata></record> |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
| subjects | Amplifiers Current sources Efficiency Energy Fiber lasers Lasers Machining Master oscillator/power amplifier Power supply Pulsed lasers Semiconductor lasers Switching Topology |
| title | An Efficiency Improvement Driver for Master Oscillator Power Amplifier Pulsed Laser Systems |
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