Watt-level widely tunable femtosecond mid-infrared KTiOAsO4 optical parametric oscillator pumped by a 1.03 µm Yb:KGW laser.
Opt Lett
; 43(4): 943-946, 2018 Feb 15.
Article
em En
| MEDLINE
| ID: mdl-29444033
ABSTRACT
A high-power, high-repetition-rate, broadband tunable femtosecond optical parametric oscillator (OPO) is constructed based on KTiOAsO4 crystal, pumped by a 75.5 MHz mode-locked YbKGW laser. With 7 W pump power, the OPO generates as much as 2.32 W of signal power at 1.55 µm and 1.31 W of idler power at 3.05 µm, corresponding to a total conversion efficiency of 51.8%. Operating at 151 MHz repetition rate, the wavelength of the signal covers 1.41-1.71 µm with a tunable idler range of 2.61-3.84 µm. The idler bandwidth is more than 180 nm over the entire mid-infrared range. By compensating intracavity dispersion, the signal pulse has a nearly Fourier transform-limited duration of 129 fs at 1.52 µm.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article