Thermooptics of solid-state lasers

A review is given of the investigations of the principal properties of unstable resonators. Applications of these resonators in various laser systems are considered

https://iopscience.iop.org/article/10.1070/QE1972v001n06ABEH003293/pdf

Unstable resonators and their applications (review)

High-power lasers are defined as systems generating pulses with powers in excess of a few gigawatts. The basic properties common to all such lasers are introduced. Specific high-power lasers are then considered with detailed discussions of neodymium, CO2 and iodine lasers.

http://iopscience.iop.org/article/10.1088/0034-4885/43/1/001/pdf

High-power lasers

A high-power flowing-gas laser comprises a laser channel folded to include at least two legs angularly disposed to each other in a common plane and having a single folding mirror between them such that the laser rays through one leg, on the upstream side thereof with respect to the gas flowing transversely across that leg, are reflected by the folding mirror so as to be transposed to the downstream side of the other leg with respect to the gas flowing transversely across the other leg. A number of embodiments are described wherein the laser channel is folded to include four or other even number of legs according to a polygonal configuration, there being a separate flowing gas channel for each leg, all the gas channels directing the gas flow radially inwardly to a common collection region. Among the advantages provided by the described constructions are compensation for phase distortion and amplitude variations, and maximum laser channel length and laser output for a given system size and volume.

A review is given of spectral, luminescent, lasing, and some physicochemical properties of concentrated neodymium phosphate glasses (CNPG's). Causes of weak quenching of Nd3+ luminescence in CNPG's are discussed. It is shown that various low-threshold high-efficiency lasers emitting at 1.06 and 1.32 μ may be developed using CNPG's. In terms of their energy characteristics, pulsed and pulse-periodic CNPG lasers are superior to similar lasers utilizing Y3Al5O12:Nd3 crystals.

Concentrated neodymium laser glasses (review)

http://iopscience.iop.org/article/10.1070/PU1968v010n04ABEH003696/pdf

Solid state lasers

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Solid state lasers