Translator Disclaimer
9 February 1989 Radiation Effects In Semiconductor Laser Diode Arrays
Author Affiliations +
Abstract
The effects of radiation events are important for many of the present and future applications that involve opto-electronic components. Laser diodes show a strong resistance to degradation by gamma rays, prompt x-rays and (to a lesser extent), neutrons. This is due to the short carrier lifetime that is associated with stimulated emission and the high current injection conditions that are present in these devices. Radiation-resistant properties should carry over to many of the more recently developed devices such as multi-stripe array and broad area laser diodes. There are however, additional considerations for radiation tolerance that are introduced by these devices. Arrays and other high power laser diodes have larger active region volumes than lower power single stripe devices. In addition, evanescent field coupling between stripes, the material quality available from newer MOCVD expitaxial growth techniques, and stripe definition methods may all influence the radiation tolerance of the high power laser diode devices. Radiation tests have been conducted on various GaAs-GaAlAs laser diode array and broad area devices. Tests involving total gamma dose have indicated that high power laser diodes and arrays have small degradations in light power output with current input after 4 MRad(Si) of radiation from a Co60 source. Additional test results involving flash X-rays indicate that high power diode lasers and arrays are tolerant to 10rads(Si)/sec, when observed on microsecond or milli-second time scales. High power diode laser devices were also irradiated with neutrons to a fluence of 1014 neutrons per cm2 with some degradation of thresh-old current level.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard F. Carson "Radiation Effects In Semiconductor Laser Diode Arrays", Proc. SPIE 0994, Optoelectronic Materials, Devices, Packaging, and Interconnects II, (9 February 1989); https://doi.org/10.1117/12.960126
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Broadened waveguide laser structures at 780 nm
Proceedings of SPIE (February 21 2017)
High-power 630-640nm GaInP/GaAlInP laser diodes
Proceedings of SPIE (October 22 1992)
High-power InGaAsP/GaAs SCH SQW lasers
Proceedings of SPIE (November 28 2000)
Radiation effects on laser diodes: a literary review
Proceedings of SPIE (September 02 2008)
Pressure tuning of high-power laser diodes
Proceedings of SPIE (November 09 2003)

Back to Top