Highly efficient continuous-wave solid-state Raman crystal lasers at 555 and 559â
nm.
Opt Express
; 32(8): 14461-14470, 2024 Apr 08.
Article
en En
| MEDLINE
| ID: mdl-38859390
ABSTRACT
High-power efficient continuous-wave NdYVO4/KGW Raman lasers at 555 and 559â
nm are achieved by using a double-sided dichroic coating output coupler to improve the resonance quality factor. The Np-cut potassium gadolinium tungstate (KGW) is used to generate the Stokes waves at 1159 and 1177â
nm by placing the polarization of the1064â
nm fundamental wave parallel to the Ng and Nm axes, respectively. The lithium triborate (LBO) crystal with the cut angle in the XY plane for the type-I phase matching is used to perform the intracavity sum frequency generation for yielding the green light at 555â
nm and the lime light at 559â
nm at the optimal phase matching temperature. Experimental results were systematically accomplished to comprehend the optimal cavity length for the conversion efficiency. Under the optimal cavity length, the output powers can reach 6.6 and 6.3 W at a pump power of 22 W for the wavelengths of 555 and 559â
nm, respectively. The conversion efficiencies can be up to 30% and 28.6% for 555 and 559â
nm, respectively.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2024
Tipo del documento:
Article