Highly tunable low-threshold optical parametric oscillation in radially poled whispering gallery resonators.
Phys Rev Lett
; 106(14): 143903, 2011 Apr 08.
Article
en En
| MEDLINE
| ID: mdl-21561193
Whispering-gallery resonators (WGR's), based on total internal reflection, possess high quality factors in a broad spectral range. Thus, nonlinear-optical processes in such cavities are ideally suited for the generation of broadband or tunable electromagnetic radiation. Experimentally and theoretically, we investigate the tunability of optical parametric oscillation in a radially structured WGR made of lithium niobate. With a 1.04 µm pump wave, the signal and idler waves are tuned from 1.78 to 2.5 µm--including the point of degeneracy--by varying the temperature between 20 and 62 °C. A weak off centering of the radial domain structure extends considerably the tuning capabilities. The oscillation threshold lies in the mW-power range.
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01-internacional
Base de datos:
MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2011
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Estados Unidos