Generation of an ultrashort optical pulse by four-wave Raman mixing in deuterium cooled at 77 K

H. Otsuka, Zaitsu Shin-Ichi, T. Uchimura, T. Imasaka

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    When a 100-fs Ti : sapphire laser is focused into molecular deuterium cooled at 77 K, rotational stimulated Raman emission is generated based on four-wave Raman mixing. By phase locking the emission lines, the laser pulsewidth was reduced to 40 fs, when a nearly transform-limited pulse was utilized as a fundamental laser. The pulsewidth was further reduced to 20 fs, when a positively chirped pulse was employed. Computer simulation suggests that the Raman emission is strongly chirped and a train of pulses with lower intensities are formed when a chirp pulse is used as a fundamental laser.

    Original languageEnglish
    Pages (from-to)745-751
    Number of pages7
    JournalApplied Physics B: Lasers and Optics
    Volume78
    Issue number6
    DOIs
    Publication statusPublished - Apr 1 2004

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)
    • Physics and Astronomy(all)

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