All solid-state spectral broadening: An average and peak power scalable method for compression of ultrashort pulses

Author
Seidel, Marcus
Arisholm, Gunnar
Brons, Jonathan
Pervak, Vladimir
Pronin, Oleg
Date Issued
2016
Keywords
Ultrakorte bølger
Permalink
http://publications.ffi.no/123456789/523
DOI
10.1364/OE.24.009412
Collection
Articles
Description
Seidel, Marcus; Arisholm, Gunnar; Brons, Jonathan; Pervak, Vladimir; Pronin, Oleg. All solid-state spectral broadening: An average and peak power scalable method for compression of ultrashort pulses. Optics Express 2016 ;Volum 24.(9) s. 9412-9428
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Abstract
Spectral broadening in bulk material is a simple, robust and low-cost method to extend the bandwidth of a laser source. Consequently, it enables ultrashort pulse compression. Experiments with a 38 MHz repetition rate, 50 W average power Kerr-lens mode-locked thin-disk oscillator were performed. The initially 1.2 μJ, 250 fs pulses are compressed to 43 fs by means of self-phase modulation in a single 15 mm thick quartz crystal and subsequent chirped-mirror compression. The losses due to spatial nonlinear effects are only about 40 %. A second broadening stage reduced the Fourier transform limit to 15 fs. It is shown that the intensity noise of the oscillator is preserved independent of the broadening factor. Simulations manifest the peak power scalability of the concept and show that it is applicable to a wide range of input pulse durations and energies.
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