Abstract

We present a novel concept to generate sub-picosecond pulses from a passively $Q$-switched $\mathrm{Nd}\text{:}{\mathrm{YVO}}_4$ microchip laser system with an adjustable wavelength shift up to a few tens of nanometers around the original emission wavelength of 1064 nm. This concept comprises two stages: one that carries out a nonlinear compression of fiber-amplified microchip pulses and a subsequent stage in which the compressed pulses are coupled into a further waveguide structure followed by a bandpass filter. In a proof-of-principle experiment, pedestal-free 0.62 ps long pulses have been demonstrated with a wavelength shift to 1045 nm.

© 2013 Optical Society of America

All-fiber pulse shortening of passively Q-switched microchip laser pulses down to sub-200  fs

R. Lehneis, A. Steinmetz, J. Limpert, and A. Tünnermann
Opt. Lett. 39(20) 5806-5809 (2014)

Sub-5-ps, multimegawatt peak-power pulses from a fiber-amplified and optically compressed passively Q-switched microchip laser

A. Steinmetz, F. Jansen, F. Stutzki, R. Lehneis, J. Limpert, and A. Tünnermann
Opt. Lett. 37(13) 2550-2552 (2012)

Dispersion-free pulse duration reduction of passively Q-switched microchip lasers

R. Lehneis, A. Steinmetz, C. Jauregui, J. Limpert, and A. Tünnermann
Opt. Lett. 37(21) 4401-4403 (2012)

Sub-20-ps pulses from a passively Q-switched microchip laser at 1  MHz repetition rate

Eva Mehner, Benjamin Bernard, Harald Giessen, Daniel Kopf, and Bernd Braun
Opt. Lett. 39(10) 2940-2943 (2014)

Smoothed spectra for enhanced dispersion-free pulse duration reduction of passively Q-switched microchip lasers

R. Lehneis, C. Jauregui, A. Steinmetz, J. Limpert, and A. Tünnermann
Opt. Lett. 39(3) 505-508 (2014)