Patent
Method for treating photorefractive effect of an optical device and photorefractive effect-suppressed optical frequency conversion device
TLDR
In this article, a method for treating photorefractive effect of an optical device, which comprises irradiating an optical devices comprising a lithium niobate single crystal or a lithium tantalate single-crystal with an ultraviolet light having a wavelength of at least 300 nm and at most 400 nm, was proposed.Abstract:
A method for treating a photorefractive effect of an optical device, which comprises irradiating an optical device comprising a lithium niobate single crystal or a lithium tantalate single crystal with an ultraviolet light having a wavelength of at least 300 nm and at most 400 nm so as to suppress and control a photo-induced refractive index change (photorefractive effect) caused on the device.read more
Citations
More filters
Patent
Method of producing quasi phase-matching crystal and quasi phase-matching crystal
Sunao Kurimura,Masaki Harada +1 more
TL;DR: In this article, a quartz crystal substrate 1 is clamped between heater blocks from above and below, and the temperature of the substrate is elevated, at the point in time at which this temperature reached a desired temperature, the substrate 1 was pressed by means of a press.
Patent
Method for controlling an optical or electro-optical component and component obtained by said method
TL;DR: In this paper, a method for controlling an optical or electro-optical component that is transparent to visible wavelengths, the near infrared and the infrared, was described, in which it comprises locally lighting an electrooptical-type material using a radiation source emitting in the blue or ultraviolet spectral range.
References
More filters
Patent
Uv reflectors and uv-based light sources having reduced uv radiation leakage incorporating the same
TL;DR: In this article, a multilayered reflector is incorporated in UV LED-based light sources to reduce the amount of UV radiation emission into the surroundings and increase the efficiency of such light sources.
Patent
Optical fiber preforms
TL;DR: In this article, a powder can be formed within a preform structure by depositing the powder coating directly from a reaction product stream through a conduit leading to the pre-form structure.