JP7381205B2 - 光学素子 - Google Patents
光学素子 Download PDFInfo
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- JP7381205B2 JP7381205B2 JP2019019735A JP2019019735A JP7381205B2 JP 7381205 B2 JP7381205 B2 JP 7381205B2 JP 2019019735 A JP2019019735 A JP 2019019735A JP 2019019735 A JP2019019735 A JP 2019019735A JP 7381205 B2 JP7381205 B2 JP 7381205B2
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/12—Beam splitting or combining systems operating by refraction only
- G02B27/126—The splitting element being a prism or prismatic array, including systems based on total internal reflection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/56—Optics using evanescent waves, i.e. inhomogeneous waves
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/021—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using plane or convex mirrors, parallel phase plates, or particular reflectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/355—Non-linear optics characterised by the materials used
- G02F1/3551—Crystals
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/20—LiNbO3, LiTaO3
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2203/00—Function characteristic
- G02F2203/13—Function characteristic involving THZ radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/3401—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers having no PN junction, e.g. unipolar lasers, intersubband lasers, quantum cascade lasers
- H01S5/3402—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers having no PN junction, e.g. unipolar lasers, intersubband lasers, quantum cascade lasers intersubband lasers, e.g. transitions within the conduction or valence bands
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Elements Other Than Lenses (AREA)
- Polarising Elements (AREA)
Description
[光学素子の構成]
[光学素子の適用例]
[実施例]
[変形例]
Claims (12)
- 第1の光及び前記第1の光よりも波長が長い第2の光を透過可能な媒質からなる本体部を備え、
前記本体部は、前記第1の光及び前記第2の光が入射する入射領域を有し、
前記本体部の内部には、前記入射領域に対して傾斜し、且つ前記第1の光及び前記第2の光に対する屈折率が前記本体部よりも低い媒質が配置されたギャップが設けられ、
前記本体部と前記ギャップとの界面からのギャップ幅は、前記界面における前記第1の光のエバネッセント波の浸み出し長よりも大きく、且つ前記界面における前記第2の光のエバネッセント波の浸み出し長よりも小さくなっており、
前記本体部は、前記第1の光と前記第2の光とが互いに重なり合うように同軸で入射する入射領域と、前記界面で反射した前記第1の光が出射する出射領域とを有する第1の部分と、前記ギャップを通過した前記第2の光が出射する出射領域を有する第2の部分と、によって構成され、
前記界面は、前記第1の部分の前記入射領域に入射した前記第1の光及び前記第2の光が到達する前記第1の部分側の第1の界面と、前記ギャップを通過した前記第2の光が到達する前記第2の部分側の第2の界面と、を有し、
前記第1の界面は、前記第1の部分と同一の媒質によって構成され、前記第2の界面は、前記第2の部分と同一の媒質によって構成されている、光学素子。 - 第1の光及び前記第1の光よりも波長が長い第2の光を透過可能な媒質からなる本体部を備え、
前記本体部は、前記第1の光及び前記第2の光が入射する入射領域を有し、
前記本体部の内部には、前記入射領域に対して傾斜し、且つ前記第1の光及び前記第2の光に対する屈折率が前記本体部よりも低い媒質が配置されたギャップが設けられ、
前記本体部と前記ギャップとの界面からのギャップ幅は、前記界面における前記第1の光のエバネッセント波の浸み出し長よりも大きく、且つ前記界面における前記第2の光のエバネッセント波の浸み出し長よりも小さくなっており、
前記本体部は、前記第2の光が入射する入射領域を有する第1の部分と、前記第1の光が入射する入射領域と、前記界面で反射した前記第1の光と前記ギャップを通過した前記第2の光とが互いに重なり合うように同軸で出射する出射領域とを有する第2の部分と、によって構成され、
前記界面は、前記第1の部分の前記入射領域に入射する前記第2の光が到達する前記第1の部分側の第1の界面と、前記第2の部分の前記入射領域に入射した前記第1の光及び前記ギャップを通過した前記第2の光が到達する前記第2の部分側の第2の界面と、を有し、
前記第1の界面は、前記第1の部分と同一の媒質によって構成され、前記第2の界面は、前記第2の部分と同一の媒質によって構成されている、光学素子。 - 前記本体部は、前記ギャップを形成するスペーサを備えている請求項1記載の光学素子。
- 前記スペーサは、前記第1の部分及び前記第2の部分の少なくとも一方に設けられた凸部によって構成されている請求項3記載の光学素子。
- 前記スペーサは、前記第1の部分及び前記第2の部分によって挟持された枠状部材によって構成されている請求項3記載の光学素子。
- 前記スペーサは、前記第1の部分及び前記第2の部分によって挟持された繊維、粒子、及び柱状部材の少なくとも一つによって構成されている請求項3記載の光学素子。
- 前記スペーサは、液体によって構成され、
前記第1の部分と前記第2の部分とは、前記液体を介して結合されている請求項3記載の光学素子。 - 前記本体部は、球状をなしている請求項1~7のいずれか一項記載の光学素子。
- 前記本体部は、前記第1の光及び前記第2の光の入射角度又は出射角度を調整するカプラを更に備えている請求項1~8のいずれか一項記載の光学素子。
- 前記第2の光の波長は、前記第1の光の波長の7倍以上である請求項1~9のいずれか一項記載の光学素子。
- 前記第2の光は、テラヘルツ波である請求項1~10のいずれか一項記載の光学素子。
- 前記ギャップ内には、媒質として空気が配置されている請求項1~11のいずれか一項記載の光学素子。
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US16/781,135 US11372256B2 (en) | 2019-02-06 | 2020-02-04 | Optical element |
CN202010080515.2A CN111538114B (zh) | 2019-02-06 | 2020-02-05 | 光学元件 |
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US20130188254A1 (en) | 2008-09-08 | 2013-07-25 | National Research Council Of Canada | Thin film optical filters with an integral air layer |
WO2018139486A1 (ja) | 2017-01-26 | 2018-08-02 | 国立研究開発法人産業技術総合研究所 | レーザ光減衰器の製造装置、この製造装置により製造されたレーザ光減衰器及びこのレーザ光減衰器の製造方法 |
US20190011714A1 (en) | 2017-07-05 | 2019-01-10 | Viavi Solutions Inc. | Total internal reflection (tir) prism beamsplitter |
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