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Proceedings Article

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB3O6

[+] Author Affiliations
Valentin Petrov, Pancho Tzankov, Frank Noack

Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy (Germany)

Masood Ghotbi, Majid Ebrahim-Zadeh

ICFO The Institute of Photonic Sciences (Spain)

Ivailo Nikolov, Ivan Buchvarov

Sofia Univ. (Bulgaria)

Proc. SPIE 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI, 64550C (February 14, 2007); doi:10.1117/12.700094
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From Conference Volume 6455

  • Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI
  • Peter E. Powers
  • San Jose, CA | January 20, 2007

abstract

We analyze the phase-matching properties of the monoclinic nonlinear crystal BiB3O6 (BIBO) for optical parametric amplification of femtosecond pulses when pumped near 800 nm by Ti:sapphire based laser systems. BIBO possesses higher figure of merit than β-BaB2O4 (BBO) and extremely large parametric gain bandwidth for collinear interaction. Experimentally, we compare type-II BIBO and BBO in a double pass optical parametric amplifier (OPA), pumping by amplified 80-fs pulses near 800 nm at a repetition rate of 1 kHz. The conversion efficiency obtained with BIBO is higher and a total energy output (signal + idler) of about 80 μJ is obtained in the plateau region of the tunability curve (1-3 μm) with an uncoated sample, for a total pump energy of 375 μJ. Shorter pulse durations were obtained with BIBO: e.g. 120 fs (FWHM) near 3 μm for the idler pulses. Substantial power scaling of such a femtosecond OPA is possible using a large aperture BIBO crystal in the second stage and we demonstrate a total energy output (signal + idler) exceeding 1 mJ, corresponding to an intrinsic conversion efficiency of ≈32% for the second stage, using a specially designed high-power Ti:sapphire pump system operating at 1 kHz. The tunability extends in this case from 1.1 to 2.9 μm. The high parametric gain and broad amplification bandwidth of type-I BIBO allow the maintenance of the pump pulse duration, leading to pulse lengths less than 140 fs, both for the signal and idler pulses, even at such high output levels.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Valentin Petrov ; Masood Ghotbi ; Pancho Tzankov ; Frank Noack ; Ivailo Nikolov, et al.
"Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB3O6", Proc. SPIE 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI, 64550C (February 14, 2007); doi:10.1117/12.700094; http://dx.doi.org/10.1117/12.700094


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