Oscillators – Relaxation oscillators
Patent
1978-08-16
1980-04-15
Corbin, John K.
Oscillators
Relaxation oscillators
331 945C, 350 9612, 350355, G02B 514
Patent
active
041981154
ABSTRACT:
The cleavage planes of a lithium niobate crystal (100) are used to provide the parallel surfaces (121 and 122) of a Fabry-Perot resonator established in a titanium diffused waveguide (110). To enable use of the extraordinary wave and therefore to provide a higher efficiency resonator, the waveguide is diffused into the crystal at a predetermined oblique angle (.PSI.) with respect to the cleaved ends. The resonator is utilized in an optically pumped laser and in an electrically controllable Fabry-Perot resonator wherein the reflection provided by the cleaved ends is supplemented by multilayered dielectric mirrors (201 and 202 or 301 and 302) that are bonded to each of the cleaved ends. In the electrically controllable resonator a dielectric layer (330) is deposited over the surface of the crystal before electrodes (310 and 311) are formed on the layer parallel to the waveguide.
REFERENCES:
patent: 4094579 (1978-06-01), McMahon et al.
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Bell Telephone Laboratories Incorporated
Corbin John K.
Dubosky Daniel D.
Lee John D.
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