公开(公告)号：US20070236779A1

公开(公告)日：2007-10-11

申请号：US11407532

申请日：2006-04-07

申请人： Andrew Kung ,  Zhida Gao ,  Shih-Yu Tu ,  Shining Zhu

发明人： Andrew Kung ,  Zhida Gao ,  Shih-Yu Tu ,  Shining Zhu

IPC分类号： G02F2/02

CPC分类号： G02F1/3532 ,  G02F1/3558 ,  H04N9/3129

摘要： In general, in one aspect, the invention features a method that includes converting radiation at a first wavelength λi to radiation at a second wavelength λg and exposing an article to the radiation at λg to convert the radiation at λg to radiation at a third wavelength λr and radiation at a fourth wavelength λb. λr is red radiation, λg is green radiation, and λb is blue radiation and the article includes lithium tantalate.

摘要翻译： 通常，在一个方面，本发明的特征在于一种方法，其包括将第一波长λλ的辐射转换成第二波长λλ的辐射，并将物品暴露于 将λλ的辐射转换成λ3的辐射到第三波长λλ的辐射，并且在第四波长λλ下辐射， b 。 λ是红色辐射，λλ是绿色辐射，λλ是蓝色辐射，并且制品包括钽酸锂。

公开(公告)号：US20070147443A1

公开(公告)日：2007-06-28

申请号：US11318234

申请日：2005-12-23

申请人： Andrew Kung ,  Shining Zhu ,  Shih-Yu Tu ,  Zhida Gao

发明人： Andrew Kung ,  Shining Zhu ,  Shih-Yu Tu ,  Zhida Gao

IPC分类号： H01S3/10 ,  H01S3/091 ,  H01S3/08 ,  H01S3/092

CPC分类号： G02F1/39 ,  G02F1/3558 ,  G02F2202/20 ,  G02F2203/05

摘要： A tunable coherent light source includes a pump laser for generating a pump beam and an optical parametric oscillator including a crystal exhibiting an output curve for a pump beam of a defined wavelength, the output curve defining wavelengths of signal and idler outputs based on periodically poled grating periods of the crystal. The crystal has a plurality of segments associated with a plurality of grating periods of the output curve, each segment of the plurality of segments having a different crystal structure. At least one of the plurality of segments comprises a crystal structure combining at least two of the grating periods A heating device heats the crystal to an elevated operating temperature and is adjustable for adjusting the output wavelengths of each of the segments.

公开(公告)号：US07298545B2

公开(公告)日：2007-11-20

申请号：US11318234

申请日：2005-12-23

申请人： Andrew H. Kung ,  Shining Zhu ,  Shih-Yu Tu ,  Zhida Gao

发明人： Andrew H. Kung ,  Shining Zhu ,  Shih-Yu Tu ,  Zhida Gao

IPC分类号： G02F1/35 ,  G02F2/02

CPC分类号： G02F1/39 ,  G02F1/3558 ,  G02F2202/20 ,  G02F2203/05

摘要： A tunable coherent light source includes a pump laser for generating a pump beam and an optical parametric oscillator including a crystal exhibiting an output curve for a pump beam of a defined wavelength, the output curve defining wavelengths of signal and idler outputs based on periodically poled grating periods of the crystal. The crystal has a plurality of segments associated with a plurality of grating periods of the output curve, each segment of the plurality of segments having a different crystal structure. At least one of the plurality of segments comprises a crystal structure combining at least two of the grating periods A heating device heats the crystal to an elevated operating temperature and is adjustable for adjusting the output wavelengths of each of the segments.

摘要翻译： 可调谐相干光源包括用于产生泵浦光束的泵浦激光器和包括具有用于定义波长的泵浦光束的输出曲线的晶体的光学参数振荡器，该输出曲线基于周期性极化光栅来定义信号波形和惰轮输出 水晶时期。 晶体具有与输出曲线的多个光栅周期相关联的多个段，多个段中的每个段具有不同的晶体结构。 多个区段中的至少一个包括结合至少两个光栅周期的晶体结构。加热装置将晶体加热到升高的工作温度，并且可调节以调节每个段的输出波长。

公开(公告)号：US06714569B2

公开(公告)日：2004-03-30

申请号：US10038518

申请日：2002-01-03

申请人： Shining Zhu ,  Jingliang He ,  Yongyuan Zhu ,  Huitian Wang ,  Guozheng Ruo ,  Chao Zhang ,  Yiqiang Qin ,  Naiben Ming

发明人： Shining Zhu ,  Jingliang He ,  Yongyuan Zhu ,  Huitian Wang ,  Guozheng Ruo ,  Chao Zhang ,  Yiqiang Qin ,  Naiben Ming

IPC分类号： H11S310

CPC分类号： B82Y20/00 ,  G02F1/017 ,  G02F1/37 ,  H01S3/08 ,  H01S3/1601

摘要： The design of a special type of optical superlattice and its application in the all-solid state laser is involved in this invention. Nd ions doped laser crystal in common use can radiate three relatively intense spectral lines when excited: the first wavelength is around 900 nm; the second wavelength is around 1064 nm; the third wavelength is around 1300 nm, whose accurate wavelength are depended on their host crystal (for example, to Nd:YAG, they are 946 nm, 1064 nm and 1319 nm, respectively). On the other hand, for LiNbO3 (LN), LiTaO3 (LT), KTP and other ferroelectric crystals, the positive and negative 180° ferroelectric domains in these crystals can be arranged orderly according to certain sequence via crystal growth, electric field poling, and other state-of-the-art domain reversion technique, forming superlattice that is applicable to quasi-phase-matching (QPM) laser frequency conversion. This invention aims at the design of optical superlattice that can realize third-harmonic generation and coupled parametric process for such three emitting lines of Nd doped crystals and its application in the all-solid state laser. Such a superlattice, which can provide two or more effective reciprocal vectors, can participate in two or more QPM optical parametric processes. Different optical parametric processes in this kind of superlattice can couple each other via cascade effect. Therefore this type of superlattice can be used as an especial frequency-conversion crystal to acquire high-order harmonic generation of laser; in addition, it can realize the simultaneous output of multicolor laser or make the output of laser tunable by quasi-phase-matched frequency down-conversion. For instance, it is applicable to the frequency-conversion devices of all-solid state blue or ultraviolet laser, red-blue or green-ultraviolet dual color laser, and red-green-blue three fundamental colors laser, and can also be used as the source of entangled photon pair in the quantum telecommunication. The scheme can be extended to other active ions (such as Er, Yb, Tm, Sm etc.) doped laser crystal comprised in an all solid-state laser system.

公开(公告)号：US09274274B1

公开(公告)日：2016-03-01

申请号：US14590284

申请日：2015-01-06

申请人： Ping Xu ,  Hua Jin ,  Shining Zhu

发明人： Ping Xu ,  Hua Jin ,  Shining Zhu

IPC分类号： G02B6/12

CPC分类号： G02B6/12033 ,  G02B6/12011 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12019 ,  G02B2006/1204 ,  G02B2006/12142 ,  G02B2006/1215 ,  G02B2006/12152 ,  G02B2006/12159 ,  G02F1/21 ,  G02F1/3775

摘要： A photonic chip based on periodical poling and waveguides circuits in ferroelectric crystals, the method is based on the integration of waveguide circuits, periodical poling and electro-optic modulator (EOM). The chip is illustrated by FIG. 1. The waveguide circuits guide the photons and makes linear operations like the beam splitting, filtering etc. on the photons. The periodical poling enables the efficient spontaneous parametric down conversion (SPDC), resulting the generation of entangled photons. The EOM controls the phase of photons dynamically. The following directional coupler distributes the entangled photons and the quantum interference takes place, resulting different types of path-entangled states by controlling the voltage of EOM insides the chip.

摘要翻译： 基于铁电晶体周期极化和波导电路的光子芯片，该方法基于波导电路，周期极化和电光调制器（EOM）的集成。 芯片由图1示出。 波导电路引导光子并进行光子束的分光，滤光等线性运算。 周期极化使得能够有效的自发参数降低转换（SPDC），从而产生缠结的光子。 EOM动态控制光子的相位。 以下定向耦合器分配纠缠光子并发生量子干涉，通过控制EOM芯片的电压来产生不同类型的路径缠结状态。