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

40 Citations (Scopus)

Abstract

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
Volume6
Issue number3
DOIs
Publication statusPublished - 2013 Mar

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Saturable absorbers
Laser modes
yttrium-aluminum garnet
Laser pulses
absorbers
pulse duration
YLF lasers
Lasers
lasers
Semiconductor lasers
semiconductor lasers
saturation
Wavelength
Crystals
wavelengths
crystals
energy

ASJC Scopus subject areas

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

Cite this

Cr4+-doped Y3Al5O12 as a saturable absorber for a Q-switched and mode-locked 639-nm Pr3+-doped LiYF4 laser. / Abe, Ryo; Kojou, Junichiro; Masuda, Kensuke; Kannari, Fumihiko.

In: Applied Physics Express, Vol. 6, No. 3, 032703, 03.2013.

Research output: Contribution to journalArticle

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