1.
Second-harmonic generation of light at 245 nm in a lithium tetraborate whispering gallery resonator.
Opt Lett
; 40(9): 1932-5, 2015 May 01.
Artículo
en Inglés
| MEDLINE
| ID: mdl-25927751
RESUMEN
A millimeter-sized, monolithic whispering gallery resonator made of a lithium tetraborate, Li2B4O7, crystal was employed for doubly resonant second-harmonic generation with a continuous-wave laser source at 490 nm. An intrinsic quality factor of 2×10(8) was observed at the pump wavelength. A conversion efficiency of 2.2% was attained with 5.9 mW of mode-matched pump power. In the lithium tetraborate resonator, it is feasible to achieve phase-matching of second-harmonic generation for pump wavelengths between 486 and 506 nm.