Thin disk lasers

The wide area of active mirror laser provides scalabilty both in single output fundamental mode beam and phase-locked high Fresnel number geometry. The highly effective heat sink is realizable with copper heat removals and diamond cooling basement. The diamond cooling admits the diode-end-pumping geometry.

Thin slice diode pumped solid-state laser :

From 1994 "On correlations between cavity mode and inversion profile in a solid-state chip laser",Optics and spectroscopy, v.77(6),985-990:

Abstract:

It is shown that a strictly single-frequency regime with selection of spatially periodic (Talbot) modes is possible in a cavity of a solid-state laser (1000 - 1500 {mu}m long) with a thin-layer active element (300 - 700 {mu}m thick) pumped by a semiconductor laser array that creates an array of amplification channels periodic (with a period of 30 - 100 {mu}m) in the cross section. The conditions for the selection of this regime become less stringent for lasers of the two- and three-micron ranges (Ho{sup +3} and Er{sup +3}), as compared to neodimium. A theoretical model based on the parabolic equations for counter-propagating waves is reduced, for the cavity parameters listed, to the Fox-Lee model with a nonlinearly amplifying screen near one of the mirrors giving satisfactory agreement with calculations using the splitting method within the framework of the initial model. The correlation coefficient of a cavity mode and inversion distribution in the active element tends to unity with the increasing number of amplification channels, which is indicative of the possibility of realizing high-efficiency phased arrays of diode-pumped solid-state lasers. 16 refs., 4 figs.

From 1990 "Two-dimensional periodic structures in a nonlinear resonator", JOSA B, v.7(6).1045-1050

Abstract:

The formation of a periodic transverse structure in the light field in a resonator consisting of mirrors and a thin layer of a nonlinear medium is considered. It is shown that, when the resonator length is a multiple of one half of the Talbot length, there exist periodic structures that are self-imaged under propagation through both the empty part of the resonator and the nonlinear medium. The influence of aperture losses is estimated. It is suggested that this type of a resonator may be useful for diode-array-pumped solid-state lasers.

Thin disk laser experimental concept 1994: Thin disk laser computational analysis 1993:

"Scalable concept for diode-pumped high-power solid-state lasers" "Scaling of diode-array-pumped solid-state lasers via self-imaging"

published in Applied Physics B. 58, Nr. 5, 1994, S. 365–372, published in Opt.Comm.,v.99, p.350-354 (1993)

Authors : A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower Author: A.Yu.Okulov

Thin disk experimental concept 1993:

K. Ueda; N. Uehara (1993). Chung, Y. C (ed.).

"Laser-diode-pumped solid state lasers for gravitational wave antenna".

Proceedings of SPIE. Frequency-Stabilized Lasers and Their Applications. 1837: 336–345. Bibcode:1993SPIE.1837..336U. doi:10.1117/12.143686

Early 1966 proposal of thin-slice active mirror semiconductor laser:

Basov, N.G., Bogdankevich, O.V. and Grasiuk, A.Z. (1966)

IEEE Journal of QE, 9, issue 2, pp. 342-347

"Semiconductor lasers with radiating mirrors."

N.G.Basov centennial year 1922-2022.