Electro-optic devices using Stark-induced birefringence and dich

Details Electro-optic devices using Stark-induced birefringence and dich Electro-optic devices using Stark-induced birefringence and dich

1980-04-08

1981-09-29

Punter, William H.

350390, G02F 117

Patent

active

042919509

ABSTRACT:
Optical devices are disclosed which rely upon Stark-induced resonant, tunable, and saturable birefringence and dichroism to provide both digital and linear amplitude optical modulators, optical shutters, tunable optical filters, and optical cutoff limiters. A Stark cell is disposed along a light beam path between two crossed polarizers with its electric field direction at 45.degree. to the polarizer pass directions. The Stark cell contains a medium exhibiting a dichroic absorption resonance at a predetermined frequency as well as birefringence at frequencies slightly above and slightly below the frequency of the absorption resonance. By applying an appropriate control voltage between the Stark cell electrodes, an electric field is generated within the Stark cell to tune the absorption resonance to overlap the frequency of an input laser beam and thereby vary the transmission through the device from maximum near resonance to zero at frequencies far away from resonance.

REFERENCES:
patent: 3497828 (1970-02-01), Telk et al.
patent: 3842372 (1974-10-01), Pao et al.
patent: 4033670 (1977-07-01), Tanton et al.
patent: 4085387 (1978-04-01), Asawa et al.
patent: 4197008 (1980-04-01), Pinnow et al.
Schawlow, A. L., "Lasers & Light", Readings From Scientific American, W. H. Freeman & Co. 6-1968, pp. 332-338.
Landman, A., "Modulation of the 3.39-.mu. NE Line by Electro-Optic Gases," Jr. App. Physics, 8-1967, pp. 3668-3675.
Asawa et al., "Wideband Modulation of the C.sup.13 O.sub.2.sup.16 Laser R(18) Line at 10.784 .mu.m with an N.sup.14 H.sub.3 Stark Cell", App. Phys. Lett. 1-15-77, pp. 96-98.
Martin et al., "Identification of Absorption Lines in Gases Used to Modulate CO.sub.2 Laser", IEEE Jr. Q.E., QE10, 2-1974, pp. 191-195.
Landman et al., "Light Modulation by Means of the Stark Effect in Molecular Gases-Application to CO.sub.2 Lasers", App. Physics Letters 12-1-69, pp. 357-360.

Affiliated with

Also associated with

Rating

Electro-optic devices using Stark-induced birefringence and dich does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electro-optic devices using Stark-induced birefringence and dich, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-optic devices using Stark-induced birefringence and dich will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1231343