Cr4+-doped Y3Al5O12 as a saturable absorber for a Q-switched and mode-locked 639-nm Pr3+-doped LiYF4 laser

Ryo Abe, Junichiro Kojou, Kensuke Masuda, Fumihiko Kannari

    Research output: Contribution to journalArticle

    43 Citations (Scopus)


    We experimentally prove that a Cr4+-doped Y3Al 5O12 (YAG) crystal exhibits saturable absorption in visible wavelengths at 639, 607, and 521 nm. From z-scan measurements, the saturation energies measured using laser pulse widths of 25 and 66 ns at 639nm are estimated to ~11:5 and 21.2 mJ/cm2, respectively. Therefore, the absorption response time will be shorter than these pulse widths. Using the Cr4+:YAG saturable absorber, we demonstrate for the first time, to the best of our knowledge, the passive Q-switched and the Q-switched mode-lock Pr3+-doped LiYF4 (YLF) lasers at 639nm pumped by an InGaN diode laser.

    Original languageEnglish
    Article number032703
    JournalApplied Physics Express
    Issue number3
    Publication statusPublished - 2013 Mar 1

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    Fingerprint Dive into the research topics of 'Cr<sup>4+</sup>-doped Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> as a saturable absorber for a Q-switched and mode-locked 639-nm Pr<sup>3+</sup>-doped LiYF<sub>4</sub> laser'. Together they form a unique fingerprint.

  • Cite this