Nd:YVO₄ disk laser with multipoint diode pumping and diffraction limited output

Abstract

The output beam parameters of the disk laser were investigated at different pump powers of nine-beam spatially periodic pumping and different resonator lengths. It was realized that a super-mode lasing regime and the values of thermally-induced distortions of an active disk were measured. The diffraction-limited output beam parameters came from the total aperture of all the lasing spots. An explanation of the in-phase super-mode lasing conditions was proposed, and the limits of its operation were defined.

CW TEM00 spectral narrow band Nd:YVO4 disk laser with two-mirror degenerate cavity configuration

“…disk lasers [4][5][6]. The K/M ratio is a parameter of the transverse mode frequencies degeneracy [2].…”

Untitled

“…One is to design the structure of the cavity so that the multi-channel off-axis beams in the cavity form a closed loop [10][11][12][13] . Another method is to combine several independent intra-cavity laser beams in series through optical coupling to realize laser output [14][15][16][17] .…”

Implementation or Suppression of the Collective Lasing of the Laser Channels at the Intracavity Spectral Beam Combining

“…However, each laser oscillator in the set is considered independently. At the same time, the situation is possible when some of the laser channels are involved in common (collective) lasing [11][12][13][14][15][16]. Such a regime was experimentally realized and theoretically justified in [17].…”