Work

Observation of tuning properties in a continuous- wave doubly resonant backward optical parametric oscillator

Year: 2025

Type: article

Abstract: Doubly resonant optical parametric oscillators (OPOs) under continuous-wave (CW) pumping are particularly notable for their low threshold and narrow linewidth. Backward OPOs (BOPOs) realized through backward quasi-phase matching, which exhibit unique tuning properties compared with conventional forward OPOs, have been demonstrated under pulsed pumping. In this work, a doubly resonant BOPO was implemented in a semi-monolithic cavity under CW pumping, and its tuning properties were characterized. By tuning the pump wavelength, the forward and backward waves exhibited tuning rates of 1.02 and -0.02, respectively. Adjusting the crystal temperature resulted in tuning rates of 3 GHz/K and -3 GHz/K for the forward and backward waves, respectively. This research establishes the BOPO as a promising candidate for applications in the field of CW OPOs.

Source: Optics Letters

DOI: 10.1364/ol.580249

Authors: Ming-Yuan Gao, Yue-Wei Song, Zhi-Cheng Guo, Yin-Hai Li, Zhi-Yuan Zhou, Bao-Sen Shi

Institution: University of Science and Technology of China

Language: English

Topic: Solid State Laser Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China

Awards: G2981390654, G6641717024, G7577809705