JP2006329857A5 - - Google Patents
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- JP2006329857A5 JP2006329857A5 JP2005155314A JP2005155314A JP2006329857A5 JP 2006329857 A5 JP2006329857 A5 JP 2006329857A5 JP 2005155314 A JP2005155314 A JP 2005155314A JP 2005155314 A JP2005155314 A JP 2005155314A JP 2006329857 A5 JP2006329857 A5 JP 2006329857A5
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical path
- changing
- path length
- length control
- 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.)
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- 230000003287 optical Effects 0.000 claims 12
- 238000002789 length control Methods 0.000 claims 7
- 238000001514 detection method Methods 0.000 claims 2
- 239000003365 glass fiber Substances 0.000 claims 1
- 230000000704 physical effect Effects 0.000 claims 1
Claims (8)
光の進行方向を変えるための部材を含み構成され、且つ前記固定部との距離を変えるための駆動ステージから成る可動部と、
光が前記可動部と前記固定部との間を進むための少なくとも３つの光路と、を備え、
前記駆動ステージを制御することにより、前記光路を進む光に対して、前記距離と該光路の数との積から得る遅延時間を与えることを特徴とする光路長制御装置。 A fixed portion including a member for changing the traveling direction of light; and
A movable part configured to include a member for changing the traveling direction of light and comprising a driving stage for changing the distance from the fixed part;
And at least three optical paths for light to travel between the movable part and the fixed part,
An optical path length control device characterized in that a delay time obtained from a product of the distance and the number of optical paths is given to light traveling along the optical path by controlling the driving stage.
前記光が照射されることによりテラヘルツ波を発生あるいは検出することのできる光伝導素子を有し、
前記駆動ステージを制御することにより、前記光路を進む光が前記光伝導素子に到達するまでの遅延時間を変化させることを特徴とする装置。 An apparatus including the optical path length control apparatus according to any one of claims 1 to 5,
Having a photoconductive element capable of generating or detecting terahertz waves when irradiated with the light;
An apparatus characterized by changing a delay time until light traveling on the optical path reaches the photoconductive element by controlling the driving stage.
前記光をビームスプリッタで２つに分割するためのビームスプリッタと、
前記ビームスプリッタが分割した前記光の一方が照射されることによりテラヘルツ波を発生させることのできる発生用光伝導素子と、
被検物を透過あるいは反射したテラヘルツ波を検出するための検出用光伝導素子と、を有し、
前記駆動ステージを制御することにより、前記ビームスプリッタが分割した前記光の他方が前記検出用光伝導素子に到達するまでの遅延時間を変化させることにより、前記透過あるいは反射したテラヘルツ波の時間波形を取得することを特徴とする装置。 An apparatus including the optical path length control apparatus according to any one of claims 1 to 5,
A beam splitter for dividing the light into two by a beam splitter;
A generating photoconductive element capable of generating a terahertz wave by being irradiated with one of the lights divided by the beam splitter;
A photoconductive element for detection for detecting a terahertz wave transmitted or reflected by the test object,
By controlling the driving stage, the time waveform of the transmitted or reflected terahertz wave is changed by changing the delay time until the other of the light divided by the beam splitter reaches the detection photoconductive element. An apparatus characterized by acquiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005155314A JP4769490B2 (en) | 2005-05-27 | 2005-05-27 | Optical path length control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005155314A JP4769490B2 (en) | 2005-05-27 | 2005-05-27 | Optical path length control device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2006329857A JP2006329857A (en) | 2006-12-07 |
| JP2006329857A5 true JP2006329857A5 (en) | 2008-07-31 |
| JP4769490B2 JP4769490B2 (en) | 2011-09-07 |
Family
ID=37551687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005155314A Expired - Fee Related JP4769490B2 (en) | 2005-05-27 | 2005-05-27 | Optical path length control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4769490B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007327897A (en) * | 2006-06-09 | 2007-12-20 | Tochigi Nikon Corp | Terahertz spectroscopic device |
| JP5037929B2 (en) * | 2006-12-18 | 2012-10-03 | キヤノン株式会社 | Information acquisition apparatus and method for an object using terahertz waves |
| JP2008209233A (en) * | 2007-02-26 | 2008-09-11 | Naohiro Tanno | Optical coherence tomographic device for spectral domain |
| JP5357531B2 (en) * | 2008-02-05 | 2013-12-04 | キヤノン株式会社 | Information acquisition apparatus and information acquisition method |
| JP5125858B2 (en) * | 2008-08-01 | 2013-01-23 | ソニー株式会社 | Optical delay device |
| JP2016017762A (en) | 2014-07-04 | 2016-02-01 | 株式会社東芝 | Optical delay device and optical coherence tomography device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789750A (en) * | 1996-09-09 | 1998-08-04 | Lucent Technologies Inc. | Optical system employing terahertz radiation |
| JP4248665B2 (en) * | 1999-03-25 | 2009-04-02 | 日本分光株式会社 | Infrared spectrometer |
| JP4368082B2 (en) * | 1999-06-21 | 2009-11-18 | 浜松ホトニクス株式会社 | Terahertz wave spectrometer |
| JP3896532B2 (en) * | 1999-07-09 | 2007-03-22 | 独立行政法人科学技術振興機構 | Terahertz complex permittivity measurement system |
| JP2003149139A (en) * | 2001-11-07 | 2003-05-21 | Mitsubishi Electric Corp | Streaming electrification field evaluation system |
| JP2005069840A (en) * | 2003-08-22 | 2005-03-17 | Japan Science & Technology Agency | Optical path difference compensation mechanism for obtaining time sequential signal of time sequence conversion pulse spectrum measuring device |
-
2005
- 2005-05-27 JP JP2005155314A patent/JP4769490B2/en not_active Expired - Fee Related
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