1.
Opt Lett
; 49(2): 407-410, 2024 Jan 15.
Article
in English
| MEDLINE
| ID: mdl-38194580
ABSTRACT
In this Letter, a novel approach for unidirectional operation of a 1064â nm solid-state ring laser is demonstrated based on difference frequency mixing. Unidirectional operation is achieved exploiting the directional parametric gain from a single-pass diode laser, facilitated through a periodically poled LiNbO3 crystal. In addition to achieving unidirectional operation, the nonlinear process further enables the generation of single-frequency mid-infrared light. Using a single-pass tapered diode laser, tunable in the range from 780 to 815â nm, the generated mid-infrared signal covers the 2.9 to 3.5 µm range while optimizing the phase-match condition of the difference frequency generation process.