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    • 11. 发明授权
    • Third-order optical autocorrelator for time-domain operation at the telecommunication wavelengths
    • 用于在电信波长下进行时域操作的三阶光自相关器
    • US07612935B2
    • 2009-11-03
    • US10557809
    • 2003-12-19
    • Gabriel Ramos-OrtizMyoungsik ChaSeth R. MarderBernard Kippelen
    • Gabriel Ramos-OrtizMyoungsik ChaSeth R. MarderBernard Kippelen
    • G02F2/02
    • G02F1/3532G02F1/353G02F1/3614G02F1/3615G02F2001/354
    • A device and method for producing a third harmonic signal from an optical pulse of wavelength k. In the device and method, an optical pulse at a wavelength k is incident on a material including at least one molecule having a formula D—U—A, where D is an electron donor group, A is an electron acceptor group, and Π is a conjugated structure having it bonds that connect D to A. The molecule exhibits a strong absorption band centered at a wavelengthko and a weakly absorbing region centered at a wavelength k, which is less than Xo. A wavelength k/2 has a value of about Xo, and a wavelength k/3 has a value of about X1. A third harmonic signal at k/3 is generated. From a measured third harmonic signal as a function of a time delay for separate optical pulses entering the material, at least one of a pulse width and a pulse shape of the optical pulse can be extracted. From a spectrally resolved third harmonic signal, a phase of the optical pulse can be extracted.
    • 一种用于从波长k的光脉冲产生三次谐波信号的装置和方法。 在该装置和方法中,波长为k的光脉冲入射到包含至少一个具有式DUA的分子的材料上,其中D是电子给体基团,A是电子受体基团,Pi是具有 它将D连接到A.分子表现出以波长为中心的强吸收带和以小于Xo的波长k为中心的弱吸收区。 波长k / 2具有约Xo的值,并且波长k / 3具有约X1的值。 产生k / 3的三次谐波信号。 作为进入材料的分离光脉冲的时间延迟的函数的测量的三次谐波信号,可以提取光脉冲的脉冲宽度和脉冲形状中的至少一个。 从光谱分辨的三次谐波信号,可以提取光脉冲的相位。
    • 19. 发明授权
    • Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings
    • 用于通过激发态吸收的非线性加热来改变预格式化全息光栅的光学数据存储的方法和装置
    • US06322931B1
    • 2001-11-27
    • US09364271
    • 1999-07-29
    • Brian H. CumpstonJoseph W. PerrySeth R. Marder
    • Brian H. CumpstonJoseph W. PerrySeth R. Marder
    • G03H112
    • B82Y10/00G02F1/3523G11B7/0045G11B7/00455G11B7/0065G11B7/245
    • The present invention comprises an optical data storage system utilizing a host material and molecules that exhibit non-linear absorption dissolved therein. The non-linear absorbing molecules allow for energy in the form of heat to be generated during the optical data storage process. This heat provides for localized alterations to occur in the pre-formatted holographic grating. The non-linear feature of these molecules allow for alterations to occur at specific depths and locations within the storage medium while limiting the secondary effects on other locations within the storage medium. The molecules exhibiting non-linear absorption may be selected from the group of molecules exhibiting two-photon absorption or reverse saturable absorption. The invention also comprises a method for preparing the optical storage medium, an optical data storage device comprising the optical data storage medium and having a format hologram stored within the medium. Additionally, the invention comprises an optical data storage system and method for use thereof wherein the storage system uses the optical data storage medium described above when altering a pre-formatted holographic grating in a localized region by non-linear thermal disruption of the grating. Another embodiment of the present invention comprises an optical data retrieval system embodying the optical data storage device described above and a method for retrieving the format hologram stored on the optical data storage device of the present invention.
    • 本发明包括利用主体材料的光学数据存储系统和在其中显示非线性吸收的分子。 非线性吸收分子允许在光学数据存储过程期间产生热的能量。 该热量提供在预格式化全息光栅中发生的局部变化。 这些分子的非线性特征允许在存储介质中的特定深度和位置处发生变化,同时限制对存储介质内的其它位置的二次效应。 显示非线性吸收的分子可以选自呈现双光子吸收或反饱和吸收的分子组。 本发明还包括一种用于制备光学存储介质的方法,包括光学数据存储介质并且具有存储在介质内的格式全息图的光学数据存储设备。 另外,本发明包括光学数据存储系统及其使用方法,其中当通过光栅的非线性热破坏来改变局部区域中的预格式化全息光栅时,存储系统使用上述光学数据存储介质。 本发明的另一实施例包括体现上述光学数据存储装置的光学数据检索系统以及用于检索存储在本发明的光学数据存储装置上的格式全息图的方法。