公开(公告)号：US20140268129A1

公开(公告)日：2014-09-18

申请号：US13798450

申请日：2013-03-13

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01J3/44

CPC classification number: G01J3/44 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0229

Abstract: In accordance with the present invention, a novel self-referencing fiber optic Raman probe is disclosed. It uses the Raman signal generated by a crystalline optical fiber to normalize the Raman signal produced by the sample in order to compensate for changes in the output power of the excitation laser light source, the coupling efficiencies of the optical fibers connecting the light source to the probe and the probe to the analyzing spectrometer, and the alignment of optical components within the probe.

Abstract translation: 根据本发明，公开了一种新型的自参照光纤拉曼探针。 它使用由结晶光纤产生的拉曼信号来归一化由样品产生的拉曼信号，以补偿激发激光光源的输出功率的变化，将光源连接到光源的耦合效率 探针和探针分析光谱仪，以及探针内的光学部件对准。

公开(公告)号：US08599373B1

公开(公告)日：2013-12-03

申请号：US13542282

申请日：2012-07-05

Applicant: Nicholas Djeu ,  Andreas Muller

Inventor： Nicholas Djeu ,  Andreas Muller

IPC: G01J3/44

CPC classification number: G01J3/44 ,  G01J3/021 ,  G01J3/26 ,  G01N21/65

Abstract: In accordance with the present invention, an ultra-sensitive Raman chemical sensor is provided that is based on an enhanced spontaneous emission as a result of cavity quantum electrodynamic effects. More specifically, the sensor in accordance with the present invention makes use of a double resonance of a microcavity with both the excitation laser frequency and the Raman frequency. As such, the Raman shift corresponds to an integer times the free spectral range of the microcavity. Because the Raman frequency directly depends on the excitation laser's frequency, the fulfillment of the resonance condition for the excitation laser frequency guarantees that resonance with the Raman frequency is also satisfied.

Abstract translation: 根据本发明，提供了一种超灵敏的拉曼化学传感器，其基于腔量子电动效应的增强的自发发射。 更具体地，根据本发明的传感器利用具有激发激光频率和拉曼频率两者的微腔的双共振。 这样，拉曼位移对应于微腔自由光谱范围的整数倍。 由于拉曼频率直接取决于激发激光的频率，激发激光频率的共振条件的实现保证了与拉曼频率的共振也得到满足。

公开(公告)号：US07104683B2

公开(公告)日：2006-09-12

申请号：US11161657

申请日：2005-08-11

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01K11/00

CPC classification number: G01K11/3213 ,  G01K3/00

Abstract: The present invention provides a thermally compensated fluorescence decay rate temperature sensor capable of measuring the true temperature of a sample surface and its associated method of use.

Abstract translation: 本发明提供一种能够测量样品表面的真实温度及其相关使用方法的热补偿荧光衰减率温度传感器。

公开(公告)号：US08592768B1

公开(公告)日：2013-11-26

申请号：US12755093

申请日：2010-04-06

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01J5/02 ,  G02B6/00 ,  G02B6/42 ,  G02B6/32 ,  G01N21/47

CPC classification number: G01N21/552 ,  G01N21/3151 ,  G01N21/7703 ,  G01N2021/7716

Abstract: A fiber optic evanescent absorption sensor. This invention makes use of two sources and one detection system, or one source and two detection systems, or two of each to determine a large range of absorbance with high accuracy for a fixed interaction length.

Abstract translation: 光纤消逝吸收传感器。 本发明利用两个源和一个检测系统，或一个源和两个检测系统，或两个源和两个检测系统，以确定固定相互作用长度的高精度的大范围吸光度。

公开(公告)号：US08011827B1

公开(公告)日：2011-09-06

申请号：US12875584

申请日：2010-09-03

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01K11/00 ,  G01J5/08

CPC classification number: G01K11/3213 ,  G01K7/42

Abstract: The present invention provides a dual-probe thermally compensated fluorescence decay rate temperature sensor capable of measuring the true temperature of a sample surface and its associated method of use.

Abstract translation: 本发明提供能够测量样品表面的真实温度及其相关使用方法的双探针热补偿荧光衰减速率温度传感器。

公开(公告)号：US07789556B2

公开(公告)日：2010-09-07

申请号：US11939974

申请日：2007-11-14

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01K11/00 ,  G01J5/08

CPC classification number: G01K11/3213 ,  G01K7/42

Abstract: The present invention provides a dual-probe thermally compensated fluorescence decay rate temperature sensor capable of measuring the true temperature of a sample surface and its associated method of use.

Abstract translation: 本发明提供能够测量样品表面的真实温度及其相关使用方法的双探针热补偿荧光衰减速率温度传感器。

公开(公告)号：US20080117951A1

公开(公告)日：2008-05-22

申请号：US11939974

申请日：2007-11-14

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01K11/00

CPC classification number: G01K11/3213 ,  G01K7/42

Abstract: The present invention provides a dual-probe thermally compensated fluorescence decay rate temperature sensor capable of measuring the true temperature of a sample surface and its associated method of use.

Abstract translation: 本发明提供能够测量样品表面的真实温度及其相关使用方法的双探针热补偿荧光衰减速率温度传感器。

公开(公告)号：US20070074655A1

公开(公告)日：2007-04-05

申请号：US11539387

申请日：2006-10-06

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: B05C13/00 ,  B05C13/02

CPC classification number: G02B3/00 ,  G02B3/0012 ,  G02B6/262 ,  G02B6/32 ,  Y10S425/129

Abstract: A microlens is affixed in the far field of an optical fiber to spatially transform a beam either entering or exiting the fiber. In a first embodiment, a droplet of photo polymer is placed on the end of an optical fiber and the fiber is spun to create an artificial gravity. The droplet is cured by UV radiation during the spinning. In a second embodiment, nanoparticles are mixed into the droplet to increase the refractive index of the photo polymer. A third embodiment employs artificial gravity to attach a microsphere to the end of the optical fiber. A fourth embodiment chemically treats the surface of the microsphere so that the requirement of artificial gravity is either reduced or eliminated. In a fifth embodiment the droplet is cured under equlibrium or nonequilibrium conditions to obtain different final shapes for the lenslet. A sixth embodiment discloses fabrication of microlens arrays.

Abstract translation: 将微透镜固定在光纤的远场中以空间转换进入或离开光纤的光束。 在第一实施例中，将光聚合物液滴放置在光纤的端部上并且纺丝以产生人造重力。 在纺丝过程中，紫外线辐射使液滴固化。 在第二实施方案中，将纳米颗粒混合到液滴中以增加光聚合物的折射率。 第三实施例使用人造重力将微球附着到光纤的端部。 第四实施例化学处理微球的表面，使人造重力的要求减少或消除。 在第五实施例中，液滴在平衡或非平衡条件下固化以获得用于小透镜的不同最终形状。 第六实施例公开了微透镜阵列的制造。