JP2003121795A5 - - Google Patents

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JP2003121795A5
JP2003121795A5 JP2002235409A JP2002235409A JP2003121795A5 JP 2003121795 A5 JP2003121795 A5 JP 2003121795A5 JP 2002235409 A JP2002235409 A JP 2002235409A JP 2002235409 A JP2002235409 A JP 2002235409A JP 2003121795 A5 JP2003121795 A5 JP 2003121795A5
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optical element
optical system
optical
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input
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JP2002235409A
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JP2003121795A (ja
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Priority claimed from US09/933,622 external-priority patent/US6900899B2/en
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Claims (11)

  1. 光学素子を備えた光学システムであって、
    前記光学素子は、第1のガラス片と、第2のガラス片と、前記第1、第2のガラス片間に配置されたビームスプリッタコーティングとを有し、
    前記光学素子は、前記第1のガラス片が有する表面の垂線に対して零でない入射角度で入力ビームを受光するように向けられることを特徴とする光学システム。
  2. 前記零でない入射角度は、前記ビームスプリッタコーティングから反射されたビームに対するピーク消光比に依存することを特徴とする、請求項1に記載の光学システム。
  3. 前記光学素子は、偏光ビームスプリッタ又はビームコンバイナであることを特徴とする、請求項1又は2のいずれかに記載の光学システム。
  4. 前記光学システムは、干渉計であり、前記光学素子と、第1の偏光を備えた第1の周波数成分と第2の偏光を備えた第2の周波数成分とを有するヘテロダインビームを発生するレーザ系と、干渉光学系とを有し、前記ヘテロダインビームは、前記入力ビームとなり、前記光学素子は、前記へテロダインビームを前記第1、第2の周波数成分を備えた第1、第2のビームにそれぞれ分離し、前記干渉光学系は、前記第1、第2のビームから測定ビームと基準ビームとを発生することを特徴とする、請求項1又は2のいずれかに記載の光学システム。
  5. 前記第1、第2のビームを受信し、前記干渉光学系に再結合ヘテロダインビームを供給するビームコンバイナをさらに有することを特徴とする、請求項4に記載の光学システム。
  6. 前記ビームコンバイナは、蒸着ビームスプリッタを備えるとともに、前記ビームコンバイナにおける反射ビームの消光比のピークに依存する前記零でない入射角度で前記第1、第2のビームを受信するように方向付けられたことを特徴とする、請求項5に記載の光学システム。
  7. 偏光ビームスプリッタコーティングを含む光学素子を調整する方法であって、
    第1の光軸に沿って前記光学素子に入力ビームを導く工程と、
    前記光学素子を回転して前記入力ビームの入射の偏揺れ角度を変化させる工程と、
    前記偏光ビームスプリッタコーティングからの前記入力ビームの一部分の反射から生じた反射ビームを観察する工程と、
    前記光学素子を、観察によって前記反射ビームに対する消光比が最良となる前記偏揺れ角度に向くようにする工程とを有することを特徴とする、光学素子の調整方法。
  8. 前記反射ビームの観察の工程は、
    前記反射ビームの所望の偏光に直交した偏光軸を備える偏光子を前記反射ビームの光路に配置する工程と、前記偏光子を透過する光強度を測定する工程とを含むことを特徴とする、請求項7に記載の方法。
  9. 前記光学素子を回転して前記入力ビームの入射の横揺れ角度を変化させて、前記偏光ビームスプリッタコーティングを透過する前記入力ビームの一部分から生じた透過ビームを観察する工程と、
    前記透過ビームの観察により前記透過ビームにおける第1の周波数成分の存在を最小にする前記横揺れ角度に前記光学素子が向くようにする工程とを、さらに有することを特徴とする、請求項7又は8のいずれかに記載の方法。
  10. 前記光学素子を回転して前記入力ビームの入射の縦揺れ角度を変化させるとともに、前記偏光ビームスプリッタコーティングによって反射された前記入力ビームの一部分から生じたビームの光路を調節する工程を、さらに有することを特徴とする、請求項7から9のいずれかに記載の方法。
  11. 前記光学素子は、偏光ビームスプリッタとビームコンバイナから成るグループから選択された素子であることを特徴とする、請求項7から10のいずれかに記載の方法。
JP2002235409A 2001-08-20 2002-08-13 光学システム及び光学素子の調整方法 Pending JP2003121795A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US933622 2001-08-20
US09/933,622 US6900899B2 (en) 2001-08-20 2001-08-20 Interferometers with coated polarizing beam splitters that are rotated to optimize extinction ratios

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JP2003121795A JP2003121795A (ja) 2003-04-23
JP2003121795A5 true JP2003121795A5 (ja) 2005-11-04

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US (3) US6900899B2 (ja)
EP (1) EP1286201B1 (ja)
JP (1) JP2003121795A (ja)
DE (1) DE60215089T2 (ja)
TW (1) TW534978B (ja)

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