2018/05/16 by Ville Ulvila, Ulvila, Ville, Markku Vainio +1
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Optics (physics.optics) #Photorefractive and Nonlinear Optics #Solid State Laser Technologies
paper · pdf · doi:10.48550/arxiv.1805.06135
openalex publication_date 2018/05/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report a singly resonant continuous-wave optical parametric oscillator (SRO), which is pumped by a semiconductor laser system and operates in the mid-infrared region (2.9 to 3.6 μm). Fast tuning of the mid-infrared output wavelength by more than 200 nm is demonstrated by scanning the pump laser wavelength through only 1.25 nm, without any need to adjust the SRO settings. The exceptionally large tuning range is obtained by choosing a pump wavelength (780 nm) that corresponds to a turning point of the group velocity mismatch between the phase-matched signal and idler waves of the SRO.