Semiconductor lasers for NASA applications

Details Semiconductor lasers for NASA applications Semiconductor lasers for NASA applications

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..420...85f&link_type=abstract

Space technology and applications international forum - 1998. AIP Conference Proceedings, Volume 420, pp. 85-90 (1998).

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Semiconductor Lasers, Laser Diodes, Design Of Specific Laser Systems, Laser Applications

Scientific paper

Lasers play a key role in a wide variety of applications relevant to NASA missions and instruments. These include such diverse areas as spectroscopy, communications, signal processing, metrology and micro-instruments. The unique characteristics of lasers including high optical power in a narrow wavelength range, small beam divergence, phase coherence, and high-frequency modulation, make lasers ideal sources for many of these applications. However, the large size, high power requirements, and relative fragility of conventional gas and solid-state lasers have limited their usefulness for many spaceborne instruments. With the advent of semiconductor lasers, it is now possible to fabricate much smaller, higher efficiency lasers and laser instruments, making them practical choices for a wide variety of applications in space missions. Semiconductor lasers also offer orders-of-magnitude increases in communication bandwidth which enables tremendous enhancements in spacecraft to ground and inter-instrument data transmission rates. Further reduction in power and weight can be gained through the monolithic integration of lasers with other optical and electrical components. Integrated architectures also offer advantages in robustness and system simplicity. The implementation of semiconductor lasers and integrated optics can impact a wide variety of systems capabilities. The following describes few applications of semiconductor lasers that are of significant interest to NASA.

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