Photonic crystal surface-emitting lasers
    5.
    发明授权
    Photonic crystal surface-emitting lasers 有权
    光子晶体发射激光器

    公开(公告)号:US09065249B2

    公开(公告)日:2015-06-23

    申请号:US14525795

    申请日:2014-10-28

    摘要: A photonic-crystal surface-emitting laser (PCSEL) includes a gain medium electromagnetically coupled to a photonic crystal whose energy band structure exhibits a Dirac cone of linear dispersion at the center of the photonic crystal's Brillouin zone. This Dirac cone's vertex is called a Dirac point; because it is at the Brillouin zone center, it is called an accidental Dirac point. Tuning the photonic crystal's band structure (e.g., by changing the photonic crystal's dimensions or refractive index) to exhibit an accidental Dirac point increases the photonic crystal's mode spacing by orders of magnitudes and reduces or eliminates the photonic crystal's distributed in-plane feedback. Thus, the photonic crystal can act as a resonator that supports single-mode output from the PCSEL over a larger area than is possible with conventional PCSELs, which have quadratic band edge dispersion. Because output power generally scales with output area, this increase in output area results in higher possible output powers.

    摘要翻译: 光子晶体表面发射激光器(PCSEL)包括与光子晶体电磁耦合的增益介质,其能带结构在光子晶体的布里渊区域的中心处呈现线性色散的狄拉克锥形。 这个狄拉克锥体的顶点称为狄拉克点; 因为它是在布里渊区中心,它被称为意外的狄拉克点。 调整光子晶体的带结构(例如,通过改变光子晶体的尺寸或折射率)以显示出意外的狄拉克点,使光子晶体的模式间隔增加数量级,并且减少或消除光子晶体的分布在平面内的反馈。 因此,光子晶体可以作为一个谐振器,它支持来自PCSEL的单模输出在比具有二次带边缘色散的常规PCSEL更大的区域上。 由于输出功率通常随输出面积而增加,所以输出面积的增加导致更高的输出功率。

    Method for synthesizing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or a derivative thereof
    6.
    发明授权
    Method for synthesizing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or a derivative thereof 有权
    合成9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物的方法

    公开(公告)号:US07964750B2

    公开(公告)日:2011-06-21

    申请号:US12535897

    申请日:2009-08-05

    IPC分类号: C07F9/6571

    CPC分类号: C07F9/657172 C07F9/65719

    摘要: A method for synthesizing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivatives has a step of introducing 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin or its derivative, an acid compound and water into a reacting chamber to form an organic layer having 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative and an aqueous layer. Because the acid compound is from an external source and has a catalyzing effect, employing the method can prevent side reaction from occurring and increase yield of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative. Furthermore, the method is a one-pot operation of hydrolysis, dehydration and cyclization, so the method does not require purification of intermediates. Therefore, the method is time- and cost-saving and requires less organic solvent, resulting in less pollution to the environment.

    摘要翻译: 合成9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物的方法具有引入6-氯-6H-二苯并[c,e] [1,2]氧杂磷杂环丁烷或其衍生物的步骤 ,酸化合物和水加入到反应室中以形成具有9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物和水层的有机层。 由于酸化合物来自外源并具有催化作用,所以采用该方法可以防止发生副反应,提高9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物的产率。 此外,该方法是水解,脱水和环化的一锅操作,因此该方法不需要中间体的纯化。 因此,该方法节省时间并且需要更少的有机溶剂,从而减少对环境的污染。

    METHOD FOR SYNTHESIZING 9,10-DIHYDRO-9-OXA-10-PHOSPHAPHENANTHRENE-10-OXIDE AND DERIVATIVES THEREOF
    7.
    发明申请
    METHOD FOR SYNTHESIZING 9,10-DIHYDRO-9-OXA-10-PHOSPHAPHENANTHRENE-10-OXIDE AND DERIVATIVES THEREOF 有权
    合成9,10-二氢-9-氧代-10-磷杂环戊烯-10-氧化物及其衍生物的方法

    公开(公告)号:US20110034717A1

    公开(公告)日:2011-02-10

    申请号:US12535897

    申请日:2009-08-05

    IPC分类号: C07F9/32

    CPC分类号: C07F9/657172 C07F9/65719

    摘要: A method for synthesizing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivatives has a step of introducing 6-chloro-6H-dibenz[c,e][1,2]oxaphosphorin or its derivative, an acid compound and water into a reacting chamber to form an organic layer having 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative and an aqueous layer. Because the acid compound is from an external source and has a catalyzing effect, employing the method can prevent side reaction from occurring and increase yield of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide or its derivative. Furthermore, the method is a one-pot operation of hydrolysis, dehydration and cyclization, so the method does not require purification of intermediates. Therefore, the method is time-and cost-saving and requires less organic solvent, resulting in less pollution to the environment.

    摘要翻译: 合成9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物的方法具有引入6-氯-6H-二苯并[c,e] [1,2]氧杂磷杂环丁烷或其衍生物的步骤 ,酸化合物和水加入到反应室中以形成具有9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物和水层的有机层。 由于酸化合物来自外源并具有催化作用,所以采用该方法可以防止发生副反应,提高9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物或其衍生物的产率。 此外,该方法是水解,脱水和环化的一锅操作,因此该方法不需要中间体的纯化。 因此,该方法节省时间并且需要更少的有机溶剂,导致对环境的污染较少。

    Image processing apparatus, image processing method, computer program and computer readable storage medium
    8.
    发明授权
    Image processing apparatus, image processing method, computer program and computer readable storage medium 失效
    图像处理装置,图像处理方法,计算机程序和计算机可读存储介质

    公开(公告)号:US07613317B2

    公开(公告)日:2009-11-03

    申请号:US11151989

    申请日:2005-06-14

    申请人: Ling Lu

    发明人: Ling Lu

    IPC分类号: G06K9/00

    摘要: There is provided a message processing apparatus including an image inputting unit for inputting a document image, an extracting unit for extracting a character image from the input document image, and an embedding unit for embedding watermark message by correcting a density value of the extracted character image.

    摘要翻译: 提供了一种消息处理装置,包括用于输入文档图像的图像输入单元,用于从输入文档图像中提取字符图像的提取单元,以及用于通过校正提取的字符图像的浓度值来嵌入水印消息的嵌入单元 。

    Method for making 8-hydroxyjulolidine compound
    9.
    发明授权
    Method for making 8-hydroxyjulolidine compound 失效
    制备8-羟基果肉苷化合物的方法

    公开(公告)号:US06433176B1

    公开(公告)日:2002-08-13

    申请号:US09793627

    申请日:2001-02-27

    IPC分类号: C07D45504

    CPC分类号: C07D455/04

    摘要: An 8-hydroxyjulolidine compound, having the formula: (wherein R1 and R2 represent independently H, halogen, hydroxyl or alkyl) is prepared by the following chemical reaction: wherein X and Y represent independently halogen, acyloxyl, sulfonyloxyl or phosphoryloxyl and R1 and R2 are as defined above.

    摘要翻译: 具有下式的8-羟基久洛尼定化合物(其中R1和R2独立地表示H,卤素,羟基或烷基)通过以下化学反应制备:其中X和Y独立地表示卤素,酰氧基,磺酰氧基或磷酰氧基,R1和R2 如上所述。

    Photonic crystal surface-emitting lasers enabled by an accidental Dirac point
    10.
    发明授权
    Photonic crystal surface-emitting lasers enabled by an accidental Dirac point 有权
    由意外狄拉克点启用的光子晶体表面发射激光器

    公开(公告)号:US08902946B2

    公开(公告)日:2014-12-02

    申请号:US13771935

    申请日:2013-02-20

    IPC分类号: H01S5/10 H01S5/187 H01S5/18

    摘要: A photonic-crystal surface-emitting laser (PCSEL) includes a gain medium electromagnetically coupled to a photonic crystal whose energy band structure exhibits a Dirac cone of linear dispersion at the center of the photonic crystal's Brillouin zone. This Dirac cone's vertex is called a Dirac point; because it is at the Brillouin zone center, it is called an accidental Dirac point. Tuning the photonic crystal's band structure (e.g., by changing the photonic crystal's dimensions or refractive index) to exhibit an accidental Dirac point increases the photonic crystal's mode spacing by orders of magnitudes and reduces or eliminates the photonic crystal's distributed in-plane feedback. Thus, the photonic crystal can act as a resonator that supports single-mode output from the PCSEL over a larger area than is possible with conventional PCSELs, which have quadratic band edge dispersion. Because output power generally scales with output area, this increase in output area results in higher possible output powers.

    摘要翻译: 光子晶体表面发射激光器(PCSEL)包括与光子晶体电磁耦合的增益介质,其能带结构在光子晶体的布里渊区域的中心处呈现线性色散的狄拉克锥形。 这个狄拉克锥体的顶点称为狄拉克点; 因为它是在布里渊区中心,它被称为意外的狄拉克点。 调整光子晶体的带结构(例如,通过改变光子晶体的尺寸或折射率)以显示出意外的狄拉克点,使光子晶体的模式间隔增加数量级,并且减少或消除光子晶体的分布在平面内的反馈。 因此,光子晶体可以作为一个谐振器,它支持来自PCSEL的单模输出在比具有二次带边缘色散的常规PCSEL更大的区域上。 由于输出功率通常随输出面积而增加,所以输出面积的增加导致更高的输出功率。