LASERS : Combined optical parametric oscillator with continuous tuning of radiation wavelength in the spectral range 2.5 – 10.8 μm. (30th January 2017)

• Record Type: Journal Article
• Authors: Kolker, D B; Sherstov, I V; Kostyukova, N Yu; Boyko, A A; Zenov, K G; Pustovalova, R V
• Is Part Of: Quantum electronics. Volume 47:Number 1(2017)
• Page Start: 14
• Page End: 19
• Publication Date: 2017-01-30
• Subjects: Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL16238
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: A combined optical parametric oscillator (OPO) with continuous tuning of the radiation wavelength in the spectral range 2.5 – 10.8 μm, optically pumped with the radiation from a Q-switched Nd : YLF laser (1.053 μm), is developed and tested. The oscillation is provided by an OPO1 based on a MgO : PPLN 'fanout' structure in the spectral region 2.5 – 4.5 μm and by an OPO2 based on HgGa2 S4 nonlinear crystals in the spectral region 4.18 – 10.8 μm, respectively. The angles of phase matching are measured for the HgGa2 S4 crystals in the spectral range 4.18 – 10.8 μm for the type II conversion (eo-e), which virtually coincide with the calculated ones. The experimental absorption spectra of a gas mixture in the range 2.5 – 10.8 μm obtained using a gas-filled sealed-off photoacoustic cell are presented.