Laser resonator: an electrooptically Q-switched Porro prism device

Abstract

The crossed Porro prism configuration improves the stability of the alignment of the laser resonator; however, the resultant phase shift alters the characteristics of the electrooptical Q-switch. An analysis of the operational characteristics, such as variable outcoupling, extinction ratio, and prelasing boundaries, is presented along with experimental data. An electrooptically Q-switched Nd:YAG laser with a crossed Porro prism resonator, which successfully withstands severe physical environments, has been developed and demonstrated.

Fabrication of Compound TIR Prism for Use in Polarized Laser Resonator Cavity

“…Applying modulating voltage on electro optical Q switching device, the beam goes back into resonator cavity and sustain for laser oscillation without any depolarization losses. If porro prism on other side is making φ degree azimuth angle with polarized light plane, then effective reflectivity for out coupling power given as [6] R sin P/2 = + 2φ 2 2 2 cos P/2 cos ) (…”

BaO–TeO2–MoO3 glass: excellent candidate for acousto-optic modulators with high diffraction efficiency, fast response, and stable operation

“…[1][2][3][4][5][6][7] In order to obtain a pulsed laser, Qswitch devices such as saturable absorbers, electro-optic (EO) Q-switches, and acousto-optic (AO) Q-switches must be used in the laser configurations. [8][9][10][11][12][13][14][15][16][17] AO Q-switches possess the advantages of controllability, fast response speed, simple structure, low modulation voltage, and convenient operation. [18][19][20] Therefore, both the AO material and modulators have been widely studied.…”

<title>High-efficiency flashlamp-pumped solid state lasers</title>

“…For example, in the polarization-coupled resonator the depolarized component of the beam contributes to the output rather than acting as a loss, as in a conventional resonator. [2][3][4][5] The drawback of polarization-coupled lasers is concerned with the birefringence distribution nonuniformity in the rod cross ti1'6 As a consequence, uniform coupling across the output beam cross section will not be achieved. The resulting beam nonunifonnity could lead to damage of optical elements.…”