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Proceedings Paper

Compression of ultrashort pulses using second harmonic generation in chirped PPLN
Author(s): M.A. Arbore; M. M. Fejer; A. Galvanauskas; M. E. Fermann; D. J. Harter
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Paper Abstract

Ultrashort-pulse lasers are, in many ways, the ideal light source for diverse applications. A particularly appealing ultrashort-pulse laser technology is diode-pumped erbium-fiber13. Fiber-based systems easily offer milliwatt-level femtosecond pulses with electrical-to-optical conversion efficiencies of several percent, while laboratory demonstrations have pushed these limits to watt-level4 average powers and pJ pulse energies5; electrical-to-optical conversion efficiencies in the 10's of percent range should be possible. However, despite their appeal, these and other ultrashort-pulse laser systems offer only limited selections of output wavelengths. Nonlinear optical frequency conversion is often used to extend the useful wavelength range of available laser sources. However, in many cases, inadequate properties of conventional nonlinear materials have prevented the application of frequency conversion to low power sources such as diode-pumped fiber lasers. Recent advances in nonlinear materials, particularly that of the quasi-phasematching (QPM) technique, have enabled the generation of an increasing range of wavelengths with improved efficiencies and with lower power laser sources. Most of the previous work on QPM frequency conversion has focused on continuous-wave (OW) or nanosecond-pulse lasers, while the work described in this summary focuses on the ultrashortpulse regime.

Paper Details

Date Published: 8 July 1998
PDF: 8 pages
Proc. SPIE 3269, Commercial Applications of Ultrafast Lasers, (8 July 1998); doi: 10.1117/12.580604
Show Author Affiliations
M.A. Arbore, Stanford Univ. (United States)
M. M. Fejer, Stanford Univ. (United States)
A. Galvanauskas, IMRA America, Inc. (United States)
M. E. Fermann, IMRA America, Inc. (United States)
D. J. Harter, IMRA America, Inc. (United States)


Published in SPIE Proceedings Vol. 3269:
Commercial Applications of Ultrafast Lasers
Murray K. Reed, Editor(s)

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