OPCPA pump laser based on a regenerative amplifier with volume Bragg grating spectral filtering |
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| Authors: | M. Hemmer A. Vaupel M. Wohlmuth M. Richardson |
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| Affiliation: | 1.Townes Laser Institute, CREOL, The College of Optics and Photonics,University of Central Florida,Orlando,USA;2.Department of Computer Science and Erlangen Graduate School in Advanced Optical Technologies (SAOT),Friedrich-Alexander University Erlangen-Nürnberg,Erlangen,Germany |
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| Abstract: | A novel Nd:YVO4−based regenerative amplifier system operating in the picosecond regime featuring a volume Bragg grating (VBG) as an intracavity spectral narrowing element is described. This compact amplifier provides pulses with duration of ∼85 ps operating at repetition rates ranging from single shot to 10 kHz. The VBG is used to passively tailor the pulse duration and achieve transform-limited pulses with 50 pm FWHM of spectral linewidth. A Gaussian output beam profile is obtained from the amplifier at all repetition rates. The intracavity VBG also guarantees a high spectral purity by efficiently preventing the build-up of out-of-band ASE. The spectral, spatial and temporal properties of this amplifier make it highly suitable for OPCPA pumping applications. |
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