OPTICAL MODULATOR AND ELECTRIC FIELD SENSOR
First Claim
1. An optical modulator capable of modulating incident laser beam by a compound semiconductor single crystal having a property of generating an electro-optic effect, the optical modulator comprising:
- incidence limiting means which is provided on or near an incidence plane, on which the laser beam can be incident, of the compound semiconductor single crystal so as to limit incidence of light other than the laser beam on the incidence plane; and
a shielding member which is formed from a low-permittivity material having a light blocking effect, and covers a surface of the compound semiconductor single crystal that extends along a traveling direction of the laser beam that entered the compound semiconductor single crystal.
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Accused Products
Abstract
In an optical modulator capable of modulating incident laser beam L by a compound semiconductor single crystal having a property of generating an electro-optic effect, the attenuation of the signal strength in a low frequency band is prevented without lowering the carrier concentration of the compound semiconductor.
The optical modulator 23 comprises: incidence limiting means 25 which is provided on or near an incidence plane 24a, on which the laser beam L can be incident, of the compound semiconductor single crystal 24 so as to limit incidence of light other than the laser beam L on the incidence plane 24a; and a shielding member 26 which is formed from a low-permittivity material having a light blocking effect, and covers a surface 24c of the compound semiconductor single crystal 24 extending along a traveling direction of the laser beam L that entered the compound semiconductor single crystal 24.
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Citations
12 Claims
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1. An optical modulator capable of modulating incident laser beam by a compound semiconductor single crystal having a property of generating an electro-optic effect, the optical modulator comprising:
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incidence limiting means which is provided on or near an incidence plane, on which the laser beam can be incident, of the compound semiconductor single crystal so as to limit incidence of light other than the laser beam on the incidence plane; and a shielding member which is formed from a low-permittivity material having a light blocking effect, and covers a surface of the compound semiconductor single crystal that extends along a traveling direction of the laser beam that entered the compound semiconductor single crystal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification