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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 9 — Apr. 23, 2012
  • pp: 10077–10082

40-fs Yb3+:CaGdAlO4 laser pumped by a single-mode 350-mW laser diode

Antonio Agnesi, Alessandro Greborio, Federico Pirzio, Giancarlo Reali, Juerg Aus der Au, and Annalisa Guandalini  »View Author Affiliations

Optics Express, Vol. 20, Issue 9, pp. 10077-10082 (2012)

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We report the results of the investigation on a passively mode-locked Yb3+:CaGdAlO4 laser, pumped by a single transverse mode laser diode emitting 350 mW at 980 nm. This particular pump source allows efficient pumping with a nearly TEM00 beam and minimal thermal load, making the optimization of the mode-locking performance more straightforward than with higher-power multimode beams. Indeed, using a semiconductor saturable absorber mirror and extra-cavity dispersion compensation, pulses as short as 40 fs (31-nm spectrum) have been measured, tunable across 20 nm with 15-mW output power. Slightly longer Fourier-limited 46-fs pulses with 33 mW output power directly from the oscillator have been achieved, using a different saturable absorber mirror. Such overall performance, especially considering these are among the shortest pulses generated in diode-pumped ytterbium lasers, confirms the excellent qualities of Yb3+:CaGdAlO4.

© 2012 OSA

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 9, 2012
Revised Manuscript: April 6, 2012
Manuscript Accepted: April 10, 2012
Published: April 18, 2012

Antonio Agnesi, Alessandro Greborio, Federico Pirzio, Giancarlo Reali, Juerg Aus der Au, and Annalisa Guandalini, "40-fs Yb3+:CaGdAlO4 laser pumped by a single-mode 350-mW laser diode," Opt. Express 20, 10077-10082 (2012)

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