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    • 22. 发明申请
    • WAVELENGTH CONVERTER
    • 波长转换器
    • US20090251766A1
    • 2009-10-08
    • US12092694
    • 2006-11-01
    • Hiroyuki FuruyaKiminori MizuuchiKazuhisa Yamamoto
    • Hiroyuki FuruyaKiminori MizuuchiKazuhisa Yamamoto
    • G02F1/35
    • G02F1/353G02B6/02204G02F2201/305H01S3/0675H01S3/13H01S3/1317
    • When one tries to obtain high-output wavelength conversion light of class W, the internal temperature of a wavelength conversion element rises significantly to cause an undue variation in phase matching wavelength and thereby it is difficult to match the wavelength of a fundamental wave to the phase matching wavelength. A part of the output of the fundamental wave or pumping light propagating on a fiber is thereby absorbed by doping the fiber with a rare earth element at a set concentration, and the temperature of a fiber grating is raised by heating the fiber grating with heat produced through the absorption. Consequently, the wavelength of the fundamental wave obtained through the fiber grating by widening the grating interval is substantially matched to the phase matching wavelength which can be converted by the wavelength conversion element, and a wavelength converter ensuring a stable high output up to class W is provided.
    • 当尝试获得等级W的高输出波长转换光时,波长转换元件的内部温度显着上升,导致相位匹配波长的不适当变化,从而难以将基波的波长与相位相匹配 匹配波长。 因此,在光纤上传播的基波或泵浦光的输出的一部分被吸收,通过用设定浓度的稀土元素掺杂光纤,并且通过用产生的热量加热光纤光栅来提高光纤光栅的温度 通过吸收。 因此,通过光栅间隔扩大而通过光纤光栅获得的基波的波长基本上与可由波长转换元件转换的相位匹配波长相匹配,并且确保稳定的高输出达到等级W的波长转换器是 提供。
    • 23. 发明申请
    • TWO-DIMENSIONAL IMAGE DISPLAY DEVICE
    • 二维图像显示装置
    • US20090141753A1
    • 2009-06-04
    • US11916372
    • 2006-06-02
    • Hiroyuki FuruyaTetsuro MizushimaKiminori MizuuchiKazuhisa Yamamoto
    • Hiroyuki FuruyaTetsuro MizushimaKiminori MizuuchiKazuhisa Yamamoto
    • H01S3/10
    • H01S3/06754G09G3/002G09G5/02G09G2320/0242H01S3/0092H01S3/0675H01S3/094003H01S3/094007H01S3/10092H01S3/1618
    • There has been a problem that interference noise called speckle noise occurs in a two-dimensional image display device using laser, and there is no applicable green light source although the speckle noise can be reduced by using a multi-wavelength light source. The present invention adopts a Yb-doped clad pump fiber (103) which is a rare-earth-doped fiber as a laser activation substance, whereby a peak of a fluorescence spectrum can be significantly increased as compared with a case of using an oxide crystal, and a variation width of an oscillation wavelength can be increased. Further, since the rare-earth-doped fiber is used as a fiber amplifier without providing laser mirrors at both ends thereof, control for a resonator length, which has been required in a conventional device (wherein an oxide crystal is used as a laser medium), is dispensed with, and thereby high-speed wavelength control is achieved, resulting in reduction in speckle noise when it is mounted on a two-dimensional image display device.
    • 存在在使用激光的二维图像显示装置中发生的称为斑点噪声的干扰噪声的问题,尽管通过使用多波长光源可以减少散斑噪声,但是不存在适用的绿色光源。 本发明采用作为激光活化物质的稀土掺杂光纤的Yb掺杂包层泵浦光纤(103),与使用氧化物晶体的情况相比,可以显着提高荧光光谱的峰值 ,并且可以增加振荡波长的变化宽度。 此外,由于稀土掺杂光纤被用作光纤放大器而不在其两端提供激光反射镜,所以在常规器件(其中氧化物晶体被用作激光介质)中所需要的谐振器长度的控制 ),从而实现高速波长控制,从而在安装在二维图像显示装置上时散斑噪声降低。
    • 25. 发明申请
    • Laser light source device and image display device
    • 激光光源装置和图像显示装置
    • US20080013574A1
    • 2008-01-17
    • US11812732
    • 2007-06-21
    • Hiroyuki FuruyaKiminori MizuuchiKazuhisa Yamamoto
    • Hiroyuki FuruyaKiminori MizuuchiKazuhisa Yamamoto
    • H01S3/30
    • H01S3/0675H01S3/005H01S3/06716H01S3/0809H01S3/0826H01S3/09415H01S3/1053H01S3/1055H01S3/1618H04N9/3129
    • The present invention concerns a laser light source device capable of multiwavelength oscillation. This laser light source device is provided with a laser light source; a laser cavity including a fiber, a first fiber grating provided at a side of the fiber toward the laser light source and having a plurality of reflection peaks, and a second fiber grating provided at a light emission end of the fiber and having a plurality of reflection peaks: a wavelength converter for converting a fundamental wave emitted from the laser cavity into a harmonic wave; a reflection wavelength varying unit capable of shifting the reflection wavelengths of the reflection peaks of the second fiber grating; and a controller for controlling phase matching conditions of the wavelength converter. Intervals between adjacent reflection peaks of the first fiber grating are different from those between adjacent reflection peaks of the second fiber grating.
    • 本发明涉及能够进行多波长振荡的激光光源装置。 该激光光源装置设置有激光光源; 包括光纤的激光腔,设置在所述光纤的朝向所述激光光源的一侧并具有多个反射峰的第一光纤光栅,以及设置在所述光纤的发光端的第二光纤光栅,并且具有多个 反射峰:用于将从激光腔发射的基波转换为谐波的波长转换器; 反射波长变化单元,其能够移动第二光纤光栅的反射峰的反射波长; 以及用于控制波长转换器的相位匹配条件的控制器。 第一光纤光栅的相邻反射峰之间的间隔与第二光纤光栅的相邻反射峰之间的间隔不同。