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Optics Letters

Optics Letters


  • Vol. 26, Iss. 21 — Nov. 1, 2001
  • pp: 1678–1680

Laser emission in highly doped Nd:YAG crystals under 4F5/2 and 4F3/2 pumping

V. Lupei, N. Pavel, and T. Taira  »View Author Affiliations

Optics Letters, Vol. 26, Issue 21, pp. 1678-1680 (2001)

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A comparison of laser emission in highly doped (2.4-and 3.5-at. %) Nd:YAG crystals is made for conventional 808-nm pumping in F5/24 and resonant pumping at 885 nm in the band that collects the hot transitions Z2→R1 and Z3→R2 of I9/24→F3/24 absorption. A systematic improvement of the laser parameters (slope efficiency and emission threshold) in absorbed power under hot-band pumping is observed, as expected from the reduction of the pump’s quantum defect. Together with the expected reduction of heat generation, resonant hot-band pumping in concentrated components shows prospect for greatly increasing the emission capabilities of the Nd:YAG lasers.

© 2001 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(140.3530) Lasers and laser optics : Lasers, neodymium
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

V. Lupei, N. Pavel, and T. Taira, "Laser emission in highly doped Nd:YAG crystals under 4F5/2 and 4F3/2 pumping," Opt. Lett. 26, 1678-1680 (2001)

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