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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 17 — Sep. 1, 2012
  • pp: 3612–3614

Nd:YVO4 amplifier for ultrafast low-power lasers

Antonio Agnesi, Luca Carrà, Riccardo Piccoli, Federico Pirzio, and Giancarlo Reali  »View Author Affiliations

Optics Letters, Vol. 37, Issue 17, pp. 3612-3614 (2012)

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An Nd:YVO4 amplifier consisting of two modules end pumped at 808 nm at 30 W total absorbed power has been designed for efficient, diffraction-limited amplification of ultrafast pulses from low-power seeders. We investigated amplification with a 50 mW, 7 ps Nd:YVO4 oscillator, a 2 mW, 15 ps Yb fiber laser, and a 30 mW, 300 fs Nd:glass laser. Output power as high as 9.5 W with 8 ps pulses was achieved with the 250 MHz vanadate seeder, whereas the 20 MHz fiber laser was amplified to 6 W. The femtosecond seeder allowed extracting Fourier-limited 4 ps pulses at 7 W output power. To our knowledge, these are the shortest pulses from any Nd:YVO4 laser device with at least 7 W output power. This suggests a novel approach to exploit the gain bandwidth of vanadate amplifiers with high output power levels. Such amplifier technology promises to offer an interesting alternative to high-power thin disk oscillators at few picoseconds duration, as well as to regenerative amplifiers with low-repetition-rate fiber seeders.

© 2012 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.7090) Lasers and laser optics : Ultrafast lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 13, 2012
Revised Manuscript: July 12, 2012
Manuscript Accepted: July 12, 2012
Published: August 27, 2012

Antonio Agnesi, Luca Carrà, Riccardo Piccoli, Federico Pirzio, and Giancarlo Reali, "Nd:YVO4 amplifier for ultrafast low-power lasers," Opt. Lett. 37, 3612-3614 (2012)

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