Mid-infrared rotated image singly resonant twisted rectangle optical parametric oscillator based on HgGa(2)S(4) pumped at 1064 nm
| Autor: | Valentin Petrov, M. K. Starikova, Svetlana Sheina, Georg Stöppler, Adolfo Esteban-Martin, Valeriy Badikov, Manuel Reza, Anna Fintisova, Georgi Marchev, Aleksey Tyazhev, Vladimir Panyutin, Dmitrii Badikov, Antonio Agnesi, Marc Eichhorn, Galina Shevyrdyaeva |
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| Rok vydání: | 2015 |
| Předmět: |
Beam diameter
Birefringence Materials science business.industry Materials Science (miscellaneous) Physics::Optics Fresnel equations Industrial and Manufacturing Engineering Planar Optics Optical parametric oscillator Physics::Accelerator Physics Fresnel number Optoelectronics Laser beam quality Business and International Management business Beam (structure) |
| Zdroj: | Applied optics. 53(33) |
| ISSN: | 1539-4522 |
| Popis: | We compare linear, planar ring, and rotated image singly resonant twisted rectangle (RISTRA) type nanosecond optical parametric oscillator cavities using HgGasub2/subSsub4/subnonlinear crystal pumped by 8 ns pulses at 1064 nm from a low beam quality pump source. The input-output characteristics and the output idler beam quality at 6300 nm are compared for two values of the pump beam diameter presenting different cavity Fresnel numbers and magnitudes of the spatial walk-off effect due to birefringence. The RISTRA cavity ensures in all cases a circular output beam profile but is advantageous in terms of beam quality with respect to the planar ring only at a large pump beam diameter. |
| Databáze: | OpenAIRE |
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