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    • 2. 发明申请
    • APPARATUS AND METHOD FOR CONVERTING LASER ENERGY
    • 用于转换激光能量的装置和方法
    • US20110116519A1
    • 2011-05-19
    • US12720162
    • 2010-03-09
    • Lung-Han PengChih-Ming LaiI-Ning HuYing-Yao LaiChu-Hsuan Haung
    • Lung-Han PengChih-Ming LaiI-Ning HuYing-Yao LaiChu-Hsuan Haung
    • H01S3/10
    • H01S3/1083G02F1/3532G02F1/39G02F2001/3546G02F2001/3548
    • Provided are an apparatus and a method for converting laser energy, characterized by employing an optical parametric oscillator for converting light of a green laser wavelength into light of a blue or red laser wavelength via a phase matching structure, by means of a non-linear optical crystal having a one-dimensional quasi-phase matching structure with a single grating period under appropriately-controlled temperature conditions. The non-linear optical crystal with the single grating period facilitates optical parametric oscillation and second harmonic generation to thereby enable green-to-blue wavelength conversion with a slope efficiency greater than 20%. Under 400 mW green light pump laser action, a periodically poled LiTaO3 crystal with a crystal length of 15 mm and without a resistant reflective plating film on its end face is capable of outputting a blue light laser beam of 56 mW.
    • 提供了一种用于转换激光能量的装置和方法,其特征在于采用光学参量振荡器,通过相位匹配结构,通过非线性光学器件将绿色激光波长的光转换成蓝色或红色激光波长的光 晶体具有在适当控制的温度条件下具有单个光栅周期的一维准相位匹配结构。 具有单光栅周期的非线性光学晶体便于光参量振荡和二次谐波产生,从而使得斜率效率大于20%的绿 - 蓝波长转换成为可能。 在400mW绿光泵浦激光作用下,晶体长度为15mm的周期极化的LiTaO3晶体在其端面上没有耐反射镀膜,能够输出56mW的蓝光激光束。
    • 6. 发明申请
    • WHITE LED
    • 白色LED
    • US20150090999A1
    • 2015-04-02
    • US14146097
    • 2014-01-02
    • Lung-Han PengYao-Te WangPo-Chun YehPo-Ting Lee
    • Lung-Han PengYao-Te WangPo-Chun YehPo-Ting Lee
    • H01L33/08H01L33/32H01L33/34H01L33/28
    • H01L33/08H01L33/26H01L33/32
    • A white LED is provided. The white LED includes a P-type layer, a tunneling structure, an N-type layer, an N-type electrode, and a P-type electrode. The tunneling structure is disposed over the P-type layer. The tunneling structure includes a first barrier layer, an active layer and a second barrier layer. The first barrier layer includes a first metal oxide layer. The active layer includes a second metal oxide layer. The second barrier layer includes a third metal oxide layer. The N-type layer is disposed over the tunneling structure. The N-type electrode and the P-type electrode are respectively contacted with the N-type layer and the P-type layer. An energy gap of the second metal oxide layer is lower than an energy gap of the first metal oxide layer and is lower than an energy gap of the third metal oxide layer.
    • 提供白色LED。 白色LED包括P型层,隧道结构,N型层,N型电极和P型电极。 隧道结构设置在P型层上。 隧道结构包括第一阻挡层,有源层和第二阻挡层。 第一阻挡层包括第一金属氧化物层。 有源层包括第二金属氧化物层。 第二阻挡层包括第三金属氧化物层。 N型层设置在隧道结构之上。 N型电极和P型电极分别与N型层和P型层接触。 第二金属氧化物层的能隙低于第一金属氧化物层的能隙,并且低于第三金属氧化物层的能隙。