期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 33, 期 17, 页码 963-966出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2021.3099998
关键词
Reliability; Optical polarization; Pump lasers; Optical pumping; Optical pulses; Diode lasers; Optical device fabrication; Laser diodes; reliability; space applications
资金
- Federal Ministry of Economics and Energy BMWi [50EP1601]
Laser diode benches with 808 nm lasing wavelength were developed and tested for pump lasers in the Nd:YAG oscillator of climate satellite MERLIN, showing reliable operation and endurance over the full mission time. Accelerated life tests confirmed the component's performance and reliability, meeting the requirements for space applications.
Laser diode benches (LDBs) with lasing wavelength of 808 nm were developed, manufactured and endurance-tested for utilization as pump lasers for the Nd:YAG oscillator in the climate satellite MERLIN. The LDBs combine customized TE-polarized GaAs-based 5-mm minibars with fast axis collimation lenses to produce a reliable, space qualified component at optical power of 63 W per minibar. Accelerated life tests of 20 LDBs are presented. Except for a small increase in threshold current, no wear out in operating current or sudden failures were observed, and reliable operation over the full mission time of >4 gigashots was confirmed. The electro-optical characteristics remain in the specified ranges after exposure to the total operational load of the mission.
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