Laser Physics and Laser Spectroscopy
Final rept. 15 Sep 1988-14 Nov 1989
STANFORD UNIV CA EDWARD L GINZTON LAB OF PHYSICS
Pagination or Media Count:
Two essential difficulties must be addressed in any low-power frequency conversion device boosting the efficiency above that of simple single-pass bulk devices which are typically less than 1W and achieving phase-matching for the desired interaction. Waveguide interactions were used to increase the conversion efficiency, and explored quais-phase-matching QPM as a broadly applicable approach to meeting the phasematching condition. Both oxide forrelectrics like LiNb03 and quantum-wells in III-V semiconductors have been investigated for these applications. Second harmonic generation SHG of near- infrared lasers to produce green and blue radiation, as well as SHG of the 9-11 micrometer output of a CO2 laser have been demonstrated in these materials. These media together constitute a significant step towards the goal of generic nonlinear media for the far-infrared - ultraviolet, based on readily available materials and fabricated with standard technologies, applicable to essentially any frequency conversion application.
- Lasers and Masers