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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 10 — May. 15, 2014
  • pp: 2940–2943

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  »View Author Affiliations


Optics Letters, Vol. 39, Issue 10, pp. 2940-2943 (2014)
http://dx.doi.org/10.1364/OL.39.002940


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Abstract

We present a 50 μm Nd3+:YVO4 microchip laser that is passively Q-switched by a semiconductor saturable absorber mirror. To reduce handling problems caused by the small crystal dimensions, the 50 μm Nd3+:YVO4 crystal is optically bonded to an undoped YVO4 crystal of a length of about 500 μm. By using a saturable absorber mirror with an effective modulation depth of >10% the system is able to deliver 16 ps pulses at a repetition rate of up to 1.0 MHz. The average laser power is 16 mW at 1064 nm. To our knowledge these are the shortest Q-switched pulses ever reported from a solid-state laser. The limits in terms of pulse width, repetition rate, output power, and system stability are discussed. Additionally, continuous-wave behavior is analyzed. Experimental data is compared with the simulation results of the coupled rate equations.

© 2014 Optical Society of America

OCIS Codes
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3540) Lasers and laser optics : Lasers, Q-switched

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 19, 2014
Revised Manuscript: April 3, 2014
Manuscript Accepted: April 13, 2014
Published: May 9, 2014

Citation
Eva Mehner, Benjamin Bernard, Harald Giessen, Daniel Kopf, and Bernd Braun, "Sub-20-ps pulses from a passively Q-switched microchip laser at 1  MHz repetition rate," Opt. Lett. 39, 2940-2943 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-10-2940

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