公开(公告)号：US20140071446A1

公开(公告)日：2014-03-13

申请号：US14080283

申请日：2013-11-14

Applicant: Nicholas Djeu ,  Andreas Muller

Inventor： Nicholas Djeu ,  Andreas Muller

IPC: G01N21/65

CPC classification number: G01N21/65 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/36 ,  G01J3/44 ,  G01N21/7746 ,  G01N2021/7789

Abstract: In accordance with the present invention, a dual-gas Raman sensor is provided that is based on an enhanced spontaneous dual emission as a result of cavity quantum electrodynamic effects. The dual-gas sensor includes a first reflector that exhibits a high reflectivity near the Raman shifted emission for the first species of interest and a moderate reflectivity near the Raman shifted emission for the second species of interest and a second reflector that exhibits a high reflectivity near the Raman shifted emission for the first species of interest and a moderate reflectivity near the Raman shifted emission for the second species of interest, allowing for the simultaneous measurement of the density of both the first species of interest and the second species of interest.

Abstract translation: 根据本发明，提供了一种双气体拉曼传感器，其基于腔量子电动势效应的增强的自发双重发射。 双气体传感器包括第一反射器，其在第一感兴趣物种的拉曼偏移发射附近表现出高的反射率，并且在第二感兴趣的物质的拉曼偏移发射附近呈现中等的反射率，以及在第二反射器附近表现出高的反射率 拉曼移动了第一种感兴趣的物种的排放量，拉曼附近的中等反射率转移了第二种感兴趣的物种的排放，允许同时测量第一种感兴趣的物种和第二种感兴趣的物种的密度。

公开(公告)号：US20060067379A1

公开(公告)日：2006-03-30

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：USD859310S1

公开(公告)日：2019-09-10

申请号：US29671658

申请日：2018-11-29

Applicant: Derek Djeu ,  Nicholas Djeu

Designer： Derek Djeu ,  Nicholas Djeu

公开(公告)号：US07682147B2

公开(公告)日：2010-03-23

申请号：US11539387

申请日：2006-10-06

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: B29C59/16 ,  B29C35/08 ,  B29D11/00

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 equilibrium 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。

公开(公告)号：US07128943B1

公开(公告)日：2006-10-31

申请号：US10369993

申请日：2003-02-20

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: B05D5/06

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。

公开(公告)号：US10392721B1

公开(公告)日：2019-08-27

申请号：US16036457

申请日：2018-07-16

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: C30B13/00 ,  H01S3/067 ,  C30B13/22 ,  C30B15/16 ,  C30B15/26

Abstract: A laser heated pedestal growth system includes two lasers having output beams that are combined with a beam combiner to produce a single beam. A growth chamber that includes a final focusing mirror for receiving and focusing the single beam of the lasers onto a tip of a feed material to create a molten zone in a focal region. A feed transport mechanism is adapted for transporting a feed material through the growth chamber and into the molten zone. An opposing seed transport mechanism is adapted for withdrawing a seed material from the growth chamber. An imaging system is adapted for capturing an image of the molten zone within the growth chamber. A controller in communication with the feed transport mechanism, the seed transport mechanism, one of the two lasers, and the imagining system is adapted to control and stabilize a fiber growth process by controlling the feed transport mechanism, the seed transport mechanism, and the power of the combined laser beam.

公开(公告)号：US09134177B2

公开(公告)日：2015-09-15

申请号：US13798450

申请日：2013-03-13

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01J3/44 ,  G01J3/02

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：US08736835B2

公开(公告)日：2014-05-27

申请号：US14080283

申请日：2013-11-14

Applicant: Nicholas Djeu ,  Andreas Muller

Inventor： Nicholas Djeu ,  Andreas Muller

IPC: G01J3/44

CPC classification number: G01N21/65 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/36 ,  G01J3/44 ,  G01N21/7746 ,  G01N2021/7789

Abstract: In accordance with the present invention, a dual-gas Raman sensor is provided that is based on an enhanced spontaneous dual emission as a result of cavity quantum electrodynamic effects. The dual-gas sensor includes a first reflector that exhibits a high reflectivity near the Raman shifted emission for the first species of interest and a moderate reflectivity near the Raman shifted emission for the second species of interest and a second reflector that exhibits a high reflectivity near the Raman shifted emission for the first species of interest and a moderate reflectivity near the Raman shifted emission for the second species of interest, allowing for the simultaneous measurement of the density of both the first species of interest and the second species of interest.

Abstract translation: 根据本发明，提供了一种双气体拉曼传感器，其基于腔量子电动势效应的增强的自发双重发射。 双气体传感器包括第一反射器，其在第一感兴趣物种的拉曼偏移发射附近表现出高的反射率，并且在第二感兴趣的物质的拉曼偏移发射附近呈现中等的反射率，以及在第二反射器附近表现出高的反射率 拉曼移动了第一种感兴趣的物种的排放量，拉曼附近的中等反射率转移了第二种感兴趣的物种的排放，允许同时测量第一种感兴趣的物种和第二种感兴趣的物种的密度。

公开(公告)号：US07855780B1

公开(公告)日：2010-12-21

申请号：US12139015

申请日：2008-06-13

Applicant: Nicholas Djeu

Inventor： Nicholas Djeu

IPC: G01N21/65 ,  G01N21/35

CPC classification number: G01N21/65 ,  G01N21/3577 ,  G01N21/552 ,  G01N2021/1734 ,  G01N2021/8528 ,  G01N2201/0846 ,  G01N2201/088

Abstract: Disclosed is a spectroscopic system having a fiber-optic probe for simultaneous IR and Raman measurement. The probe includes a single strand of optical fiber, such as sapphire which is suitable for IR absorption measurements as far as 4 μm and Raman excitation at wavelengths as short as 300 nm. The probe is immersed in the sample and functions in the evanescent wave mode for both IR absorption and Raman scattering measurements. The sensing system makes possible the synergistic, and simultaneous, analysis of both IR and Raman data in an integrated device.

Abstract translation: 公开了一种具有用于同时IR和拉曼测量的光纤探针的光谱系统。 该探头包括单股光纤，例如蓝宝石，其适合于至多4μm的IR吸收测量和在短于300nm的波长下的拉曼激发。 将探针浸入样品中，并以ev逝波模式进行红外吸收和拉曼散射测量。 感测系统使得集成器件中IR和拉曼数据的协同和同时分析成为可能。

公开(公告)号：US11311336B1

公开(公告)日：2022-04-26

申请号：US17181875

申请日：2021-02-22

Applicant: Derek Djeu ,  Nicholas Djeu

Inventor： Derek Djeu ,  Nicholas Djeu

IPC: A61B18/22 ,  A61B17/00 ,  A61B18/20

Abstract: A hand piece for delivering energy from a laser to a target through a fiber tip includes an elongated handle having a proximal end and a distal end. An axial bore traverses the handle along a longitudinal axis thereof. A fiber tip holding mechanism is fixed within the axial bore of the handle and includes a forward section fixed with the handle, a spring, and a rear section that includes a hollow collet projecting forward therefrom that traverses the spring and the forward section. The forward section is slidable rearward towards the rear section to compress the spring in a rear position. The spring urges the forward section forward into a forward position. A chuck is fixed with the forward end of the fiber tip holding mechanism and includes a tapered sleeve and two or more oppositely tapered jaws.