Broadly tunable continuous-wave laser using color centers

Details Broadly tunable continuous-wave laser using color centers Broadly tunable continuous-wave laser using color centers

1975-03-03

1976-07-20

Sikes, William L.

Oscillators

Molecular or particle resonant type

330 43, H01S 316

Patent

active

039709604

ABSTRACT:
Broadly tunable infrared lasers analogous to dye lasers operating in the visible spectrum are provided by significant improvements upon an F.sub.A (II) color center laser previously demonstrated in a limited way. The improvements include techniques for also using F.sub.B (II) and F.sub.2 .sup.+ color centers and include substantially increased concentrations of the F-centers in regions of pumpable geometry, judicious choice of pumping frequencies and powers and variable, frequency-selecting resonators that are capable of producing oscillation anywhere in the color center fluorescence bands. All solid-state cooling by means of contact between the crystal and a solid heat sink is provided in a way that provides the optical quality needed for efficient operation and for greatest tuning bandwidth of the laser. Use of the color centers in distributed feedback devices is described.

REFERENCES:
patent: 3447138 (1969-05-01), Carson et al.
patent: 3753148 (1973-08-01), Billman
Fritz et al., Laser Effect in KCL with F.sub. A (Li) Centers, Solid State Communications, vol. 3, No. 3, (1965), pp. 61-63.
Physics of Color Centers, Edited by Fowler, Academic Press, N.Y., (1968), pp. 182-242.
Bloom, Modes of a Laser Resonator Container Tilted Birefringent Plates, JOSA, vol. 64, No. 4, (Apr. 1974), pp. 447-452.

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