Laser device and light signal amplifying device using the same
AssigneeHoya Corporation
InventorKatsuhisa Itoh
Life of this patent
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Abstract
In a laser device and a light signal amplifying device with an optical fiber containing a laser activating substance in the inside for emitting a light beam from the end part in the case the laser activating substance is excited, fixed in a dense state at least partially by an optical medium, a polysilsesquioxane including a repeating unit represented by a general formula RSiO1.5 (wherein R represents an alkyl group, a hydroxyl group, a phenyl group, a vinyl group, a 2-chloroethyl group, a 2-bromoethyl group, a hydrogen, a heavy hydrogen, a fluorine, or an oxygen. However, one having R entirely as an oxygen is excluded. Moreover, R may be different per each repeating unit.) is used as the optical medium.
Claims8
A laser device with an optical fiber containing a laser activating substance inside for emitting a laser beam from a distal end portion thereof, a part of said optical fiber being fixed in a dense state by an optical medium,
- wherein the optical medium is an organic-inorganic hybrid material having a 400° C. or lower curing temperature, and
- further wherein once the optical medium is cured, a thermal decomposition starting temperature is 300° C. or higher, a refractive index lies between 1.40 to 1.56 by an exciting light wavelength capable of exciting the laser activating substance, and a transparency loss is 0.5 dB/cm or less.
A laser device with an optical fiber containing a laser activating substance inside for emitting a laser beam from a distal end portion thereof, a part of said optical fiber being fixed in a dense state by an optical medium, wherein
- the optical medium is an organic-inorganic hybrid material including a repeating unit represented by a general formula RSiO1.5,
- further wherein R is selected from an alkyl group, a hydroxyl group, a phenyl group, a vinyl group, a 2-chloroethyl group, a 2-bromoethyl group, a hydrogen, a heavy hydrogen, a fluorine, and an oxygen, said R with entire oxygen being excluded, said R in each repeating unit being permitted to be different.
A laser device with an optical fiber containing a laser activating substance inside for emitting a laser beam from a distal end portion thereof, a part of said optical fiber being fixed in a dense state by an optical medium, wherein
- the optical medium contains an oligomer or a polymer including at least one member selected from a group consisting of a polymethyl silsesquioxane, a polymethyl-hydride silsesquioxane, a polyphenyl silsesquioxane, a polyphenyl-methyl silsesquioxane, a phenyl silsesquioxane-dimethyl siloxane copolymer, a polyphenyl-vinyl silsesquioxane, polycyclohexyl silsesquioxane, a polycyclopentyl silsesquioxane, a polyhydride silsesquioxane, a poly(2-chloro ethyl) silsesquioxane, and a poly(2-bromo ethyl) silsesquioxane, or a mixture of said at least one member and a polysiloxane.
A laser device with an optical fiber containing a laser activating substance inside for emitting a laser beam from a distal end portion thereof, a part of said optical fiber being fixed in a dense state by an optical medium, wherein
- the optical medium contains an amorphous silica produced by curing at least one member selected from a group consisting of a poly(2-chloro ethyl) silsesquioxane, a poly(2-bromo ethyl) silsesquioxane, and a mixture thereof.
Dependencies are inferred from the claim text.