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Proceedings Paper

Diamond cooling of high-power diode-pumped solid state lasers
Author(s): Yitshak Tzuk; Alon Tal; Sharone Goldring; Yaakov Glick; Eyal Lebiush; Guy Kaufman; Raphael Lavi
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Paper Abstract

We have demonstrated the feasibility of cooling high power solid-stae lasers with diamond windows, whose thermal conductivity is about two orders of magnitude higher than sapphire's. An output power of 200Watt was achieved froma single Nd:YVO4 slab in a zigzag configuration when pumped with 600Watt diodes at 808nm. The maximum output power reported in the literature with conventional cooling schemes is about 50W. A 2.3x4x24mm3 slab was pumped from its broad side (4x24 mm2) through a 0.3mm thick optical diamond window placed in close contact with the lasing crystal. The diamond window, held in a water-cooled copper housing acted as a heat conductor. The other broad side of the crystal was cooled directly by its water-cooled copper housing. Since pumping and cooling were along the same axis, a Cartesian thermal gradient was achieved, while the zigzag scheme was used to minimize thermal lensing. By using a BBO Q-switch, 70Watt average power was obtained at 20kHz with a pulse width of 19msec and with a beam quality of 3 and 12 times diffraction limit in the zigzag and transverse directions respectively. The output of a two-head configuration was 295Watt.

Paper Details

Date Published: 17 June 2003
PDF: 9 pages
Proc. SPIE 4968, Solid State Lasers XII, (17 June 2003); doi: 10.1117/12.478959
Show Author Affiliations
Yitshak Tzuk, Soreq Nuclear Research Ctr. (Israel)
Alon Tal, Soreq Nuclear Research Ctr. (Israel)
Sharone Goldring, Soreq Nuclear Research Ctr. (Israel)
Yaakov Glick, Soreq Nuclear Research Ctr. (Israel)
Eyal Lebiush, Soreq Nuclear Research Ctr. (Israel)
Guy Kaufman, Soreq Nuclear Research Ctr. (Israel)
Raphael Lavi, Soreq Nuclear Research Ctr. (Israel)


Published in SPIE Proceedings Vol. 4968:
Solid State Lasers XII
Richard Scheps, Editor(s)

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