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Comparative study of spectral narrowing of a pulsed Ti:Sapphire laser using pulsed and CW injection seeding

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Abstract

We report a comparative study of a pulsed as well as continuous-wave (cw) injection seeding of a Ti:Sapphire laser pumped by aQ-switched frequency-doubled Nd3+:YAG laser for achieving narrow spectral bandwidth. The results have indicated that the Ti:Sapphire laser using either a pulsed or a cw injection seeding could achieve efficient energy extraction in a narrow spectral bandwidth. In the case of pulsed injection seeding, the injection energy required for the complete injection seeding critically depended upon the timing of the Ti:Sapphire laser with respect to the delayed onset of the slave laser. On the other hand, in the case of cw injection seeding, the spectral bandwidth of the Ti:Sapphire laser was efficiently narrowed down to approximately 0.01 cm−1 with an injection power of less than 1 mW. In both types of injection seeding, characteristics observed experimentally were compared with those obtained by a numerical simulation code based on the one-dimensional rate-equation model.

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Authors and Affiliations

  1. Department of Electrical Engineering, Kyushu University, Hakozaki, 812, Fukuoka, Japan

    N. J. Vasa, M. Tanaka, T. Okada & M. Maeda

  2. Division of Meteorological Satellite and Observation System, Meteorological Research Institute, 305, Tsukuba, Ibaraki, Japan

    O. Uchino

Authors
  1. N. J. Vasa
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  2. M. Tanaka
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  3. T. Okada
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  4. M. Maeda
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  5. O. Uchino
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Vasa, N.J., Tanaka, M., Okada, T. et al. Comparative study of spectral narrowing of a pulsed Ti:Sapphire laser using pulsed and CW injection seeding. Appl. Phys. B 62, 51–57 (1996). https://doi.org/10.1007/BF01081247

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  • DOI: https://doi.org/10.1007/BF01081247

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