JP7007667B2 - パルス電磁波発生装置および計測装置 - Google Patents
パルス電磁波発生装置および計測装置 Download PDFInfo
- Publication number
- JP7007667B2 JP7007667B2 JP2018044783A JP2018044783A JP7007667B2 JP 7007667 B2 JP7007667 B2 JP 7007667B2 JP 2018044783 A JP2018044783 A JP 2018044783A JP 2018044783 A JP2018044783 A JP 2018044783A JP 7007667 B2 JP7007667 B2 JP 7007667B2
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- laser
- electromagnetic wave
- pulsed
- wave generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- H01S3/0092—Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/0627—Construction or shape of active medium the resonator being monolithic, e.g. microlaser
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/08022—Longitudinal modes
- H01S3/08031—Single-mode emission
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094049—Guiding of the pump light
- H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/113—Q-switching using intracavity saturable absorbers
-
- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
-
- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/162—Solid materials characterised by an active (lasing) ion transition metal
- H01S3/1623—Solid materials characterised by an active (lasing) ion transition metal chromium, e.g. Alexandrite
-
- 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
- G02F2202/06—Materials and properties dopant
-
- 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
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/0619—Coatings, e.g. AR, HR, passivation layer
- H01S3/0621—Coatings on the end-faces, e.g. input/output surfaces of the laser light
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
- H01S3/09415—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-pumping
-
- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/164—Solid materials characterised by a crystal matrix garnet
- H01S3/1643—YAG
Description
2 パルス電磁波発生装置
3 検出器
4 パルス光発生装置
5 波長変換部
7 励起光源
8 レーザー共振器
10 パルス発生部
11 レーザー光源
12 波長変換素子
Claims (5)
- 励起光源と、前記励起光源からの励起光が入射するレーザー共振器と、パルス発生部と、前記パルス発生部から発生するパルス光群を入射し、前記パルス光群の各パルスを波長変換したパルス電磁波を発生する波長変換部と、を有するパルス電磁波発生装置であって、
前記励起光源の1回の励起行程において、周波数(ω)および発振タイミング(t)の異なる少なくとも2つ以上のパルス光を含むパルス光群を発生し、
前記パルス光群における各パルス光の発振周波数差(Δω)は、前記レーザー共振器の縦モード間隔の整数倍である、
ことを特徴とするパルス電磁波発生装置。 - 前記パルス発生部は、Qスイッチ素子である、
ことを特徴とする請求項1に記載のパルス電磁波発生装置。 - 前記波長変換部は、
前記パルス光発生装置とは異なる周波数のレーザー光を発振するレーザー光源と、
前記パルス光群と前記レーザー光の周波数差の周波数のパルス電磁波を発生させる波長変換素子と、
を備えることを特徴とする請求項1または2に記載のパルス電磁波発生装置。 - 前記波長変換素子は、酸化マグネシウム添加のニオブ酸リチウム(MgO:LiNbO3)結晶である、
ことを特徴とする請求項3に記載のパルス電磁波発生装置。 - 請求項1ないし4の何れか一項に記載のパルス電磁波発生装置と、
前記パルス電磁波発生装置から発生した発振周波数および発振時間の異なるパルス電磁波を時間的に分離して検出できる検出器と、
を備えることを特徴とする計測装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018044783A JP7007667B2 (ja) | 2018-03-12 | 2018-03-12 | パルス電磁波発生装置および計測装置 |
US16/292,381 US10714888B2 (en) | 2018-03-12 | 2019-03-05 | Pulsed electromagnetic-wave generator and measuring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018044783A JP7007667B2 (ja) | 2018-03-12 | 2018-03-12 | パルス電磁波発生装置および計測装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019160977A JP2019160977A (ja) | 2019-09-19 |
JP7007667B2 true JP7007667B2 (ja) | 2022-02-10 |
Family
ID=67842163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018044783A Active JP7007667B2 (ja) | 2018-03-12 | 2018-03-12 | パルス電磁波発生装置および計測装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US10714888B2 (ja) |
JP (1) | JP7007667B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7365042B2 (ja) | 2019-10-18 | 2023-10-19 | フェムトディプロイメンツ株式会社 | 電磁波信号解析装置および電磁波信号解析用プログラム |
US11899107B2 (en) | 2019-10-25 | 2024-02-13 | Ricoh Company, Ltd. | Detection apparatus and method of detecting object comprising a circuitry to switch an illuminance level at each illuminance region with a plurality of illuminance levels |
JP7476519B2 (ja) | 2019-11-15 | 2024-05-01 | 株式会社リコー | 光源装置、検出装置及び電子機器 |
JP2022025692A (ja) | 2020-07-29 | 2022-02-10 | 株式会社リコー | 照明モジュール、距離測定装置、移動体、および光源駆動回路 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000133864A (ja) | 1998-10-28 | 2000-05-12 | Shimadzu Corp | Ld励起固体レーザ装置 |
JP2003302666A (ja) | 2002-04-09 | 2003-10-24 | Inst Of Physical & Chemical Res | テラヘルツ波発生装置とその同調方法 |
JP2011075583A (ja) | 2009-09-03 | 2011-04-14 | Institute Of Physical & Chemical Research | 単色波長可変型テラヘルツ波発生/検出システム及び方法 |
US20110103801A1 (en) | 2008-03-20 | 2011-05-05 | Deutsche Telekom Ag | Method for producing terahertz electromagnetic carrier waves |
JP2014225542A (ja) | 2013-05-16 | 2014-12-04 | 株式会社島津製作所 | 固体パルスレーザ装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3646465B2 (ja) * | 1997-04-18 | 2005-05-11 | ソニー株式会社 | レーザ光発生装置 |
JPH11108836A (ja) | 1997-10-07 | 1999-04-23 | Nec Corp | 微量気体検出装置および微量気体検出方法 |
JP4657956B2 (ja) | 2006-03-14 | 2011-03-23 | 三菱電機株式会社 | 差分吸収ライダ装置 |
US7742510B2 (en) * | 2006-04-27 | 2010-06-22 | Spectralus Corporation | Compact solid-state laser with nonlinear frequency conversion using periodically poled materials |
US7724797B2 (en) * | 2006-04-27 | 2010-05-25 | Spectralus Corporation | Solid-state laser arrays using nonlinear frequency conversion in periodically poled materials |
US8953647B1 (en) * | 2007-03-21 | 2015-02-10 | Lockheed Martin Corporation | High-power laser using thulium-doped fiber amplifier and frequency quadrupling for blue output |
JP5704841B2 (ja) * | 2010-06-10 | 2015-04-22 | キヤノン株式会社 | 光源装置及びこれを用いた撮像装置 |
US20120188554A1 (en) * | 2011-01-24 | 2012-07-26 | Canon Kabushiki Kaisha | Light source device and imaging apparatus using the same |
-
2018
- 2018-03-12 JP JP2018044783A patent/JP7007667B2/ja active Active
-
2019
- 2019-03-05 US US16/292,381 patent/US10714888B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000133864A (ja) | 1998-10-28 | 2000-05-12 | Shimadzu Corp | Ld励起固体レーザ装置 |
JP2003302666A (ja) | 2002-04-09 | 2003-10-24 | Inst Of Physical & Chemical Res | テラヘルツ波発生装置とその同調方法 |
US20110103801A1 (en) | 2008-03-20 | 2011-05-05 | Deutsche Telekom Ag | Method for producing terahertz electromagnetic carrier waves |
JP2011075583A (ja) | 2009-09-03 | 2011-04-14 | Institute Of Physical & Chemical Research | 単色波長可変型テラヘルツ波発生/検出システム及び方法 |
JP2014225542A (ja) | 2013-05-16 | 2014-12-04 | 株式会社島津製作所 | 固体パルスレーザ装置 |
Also Published As
Publication number | Publication date |
---|---|
US20190280454A1 (en) | 2019-09-12 |
US10714888B2 (en) | 2020-07-14 |
JP2019160977A (ja) | 2019-09-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7007667B2 (ja) | パルス電磁波発生装置および計測装置 | |
Zhao et al. | Microwave induced transparency in ruby | |
CA2574111C (en) | Generation of radiation with stabilized frequency | |
US8964803B2 (en) | Wavelength sweeping light source and imaging apparatus using the same | |
JP4793675B2 (ja) | 距離測定装置 | |
JP5096543B2 (ja) | テラヘルツ波装置 | |
JP6071203B2 (ja) | 光源装置及びこれを用いた光干渉断層撮像装置、及び光発振方法 | |
CA2781319C (en) | Fiber laser oscillators and systems using an optimized phase varying function | |
JP5517818B2 (ja) | 光源装置及びこれを用いた撮像装置 | |
KR102471958B1 (ko) | 광대역 출력을 가지는 튜닝가능한 라이트 소스 | |
JP4617434B2 (ja) | 距離測定装置 | |
Siebe et al. | A fully tunable dual-color CW Ti: Al/sub 2/O/sub 3/laser | |
Nakamura et al. | Interferometric studies on a diode-pumped Nd: YVO4 laser with frequency-shifted feedback | |
Dingjan et al. | A frequency-doubled laser system producing ns pulses for rubidium manipulation | |
KR101453472B1 (ko) | 테라헤르츠파 장치 | |
JP6016132B2 (ja) | 自己参照干渉装置 | |
US10476225B2 (en) | Injected laser and method for generating longitudinal multimode laser pulses | |
Lai et al. | Coherence of pulsed microwave signals carried by two-frequency solid-state lasers | |
US20210293696A1 (en) | Photoacoustic gas sensor using a method for modulating the illumination wavelength | |
Ikeo et al. | Dual-pulse passively Q-switched microchip laser for two-color tandem THz-wave pulse generation | |
JP2005243879A (ja) | 高調波レーザビーム発生装置 | |
US11868024B2 (en) | Frequency-conversion of an optical frequency comb | |
Vasilyev et al. | 5-Octave Laser Source Based on Cr: ZnS-GaSe Tandem | |
JP2003270040A (ja) | 分光分析方法および分光分析システム | |
Takida et al. | Terahertz Differential Absorption Spectroscopy Using Multi-Furcated Nd: YAG Microchip Laser for Gas Sensing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20201118 |
|
TRDD | Decision of grant or rejection written | ||
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20211129 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20211130 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20211223 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7007667 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |