JP6546979B2 - 周波数変換結晶アニール方法 - Google Patents
周波数変換結晶アニール方法 Download PDFInfo
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- 239000013078 crystal Substances 0.000 title claims description 189
- 238000000034 method Methods 0.000 title claims description 60
- 238000006243 chemical reaction Methods 0.000 title claims description 53
- 238000000137 annealing Methods 0.000 title claims description 26
- 230000008569 process Effects 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 239000012535 impurity Substances 0.000 claims description 17
- 238000005728 strengthening Methods 0.000 claims description 16
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 238000002329 infrared spectrum Methods 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 claims 1
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- 239000002245 particle Substances 0.000 description 12
- 201000009310 astigmatism Diseases 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 7
- 235000012431 wafers Nutrition 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
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- 238000006731 degradation reaction Methods 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
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- 235000019796 monopotassium phosphate Nutrition 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- NNAZVIPNYDXXPF-UHFFFAOYSA-N [Li+].[Cs+].OB([O-])[O-] Chemical compound [Li+].[Cs+].OB([O-])[O-] NNAZVIPNYDXXPF-UHFFFAOYSA-N 0.000 description 2
- VCZFPTGOQQOZGI-UHFFFAOYSA-N lithium bis(oxoboranyloxy)borinate Chemical compound [Li+].[O-]B(OB=O)OB=O VCZFPTGOQQOZGI-UHFFFAOYSA-N 0.000 description 2
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- JDLDTRXYGQMDRV-UHFFFAOYSA-N tricesium;borate Chemical compound [Cs+].[Cs+].[Cs+].[O-]B([O-])[O-] JDLDTRXYGQMDRV-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XBJJRSFLZVLCSE-UHFFFAOYSA-N barium(2+);diborate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]B([O-])[O-].[O-]B([O-])[O-] XBJJRSFLZVLCSE-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
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- 238000012937 correction Methods 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Description
本願は、「Mode−Locked UV Laser With High Quality,Stable Output Beam, Long−Life High Conversion Efficiency Non−Linear Crystal And A Wafer Inspection Using A Mode−Locked UVLaser」と題し、2011年7月22日に出願された米国仮出願第61/510,633号の優先権を主張する。
Claims (17)
- 周波数変換結晶をアニールする方法であって、
約2時間にわたって約150℃に温度を上昇させるステップと、
約10時間、前記温度を150℃近くで保持するステップと、
約1時間にわたって前記温度を約200℃に上昇させるステップと、
約100時間以上、前記温度を150℃と200℃との間で保持するステップと、
約3時間にわたって前記温度を室温近くに低下させるステップと、
を含む方法。 - 周波数変換結晶をアニールする方法であって、
(a)約2時間にわたって温度を約150℃に上昇させるステップと、
(b)約10時間、前記温度を150℃近くで保持するステップと、
(c)ステップ(b)の間に、−OH結合吸収が第1のレベルであるかどうかを判断し、第1のレベルではない場合には、前記温度を150℃近くで保持し続け、第1のレベルである場合には、ステップ(d)に進む、ステップと、
(d)約1時間にわたって前記温度を約200℃に上昇させるステップと、
(e)約100時間、温度を150℃と200℃の間に保持するステップと、
(f)ステップ(e)の間に、前記‐OH結合吸収が第2のレベルであるかどうかを判断し、第2のレベルではない場合には、前記温度を150℃と200℃との間で保持し続け、第2のレベルである場合には、ステップ(g)に進む、ステップと、
(g)約3時間にわたって前記温度を実質的に室温まで低下させるステップと、
を含む方法。 - 前記判断するステップ(c)及び(e)がFTIR(フーリエ変換赤外線分光法)を使用する、請求項2に記載の方法。
- 前記FTIRが赤外線スペクトルの3580cm−1近くで‐OH結合を監視する、請求項3に記載の方法。
- 結晶中の不純物の量を減少させる多段強化アニール方法であって、
前記結晶の温度を第1の所定温度に上昇させる第1の強化段階と、
前記結晶を前記第1の所定温度に保持し、前記結晶中の前記不純物の量を元の量から第1のレベルに減少させるステップと、
前記結晶の温度を、前記第1の所定温度よりも高い、第2の所定温度に上昇させる第2の強化段階と、
前記結晶を前記第2の所定温度に保持し、前記結晶中の前記不純物の量を前記第1のレベルから第2のレベルに減少させるステップと、
前記結晶の温度を室温近くに低下させるステップと、
を含む、多段強化アニール方法。 - 前記方法が、前記結晶中の水の量を減少させるステップを含む、請求項5に記載の方法。
- 前記第1の強化段階の間、前記保持するステップの間、前記第2の強化段階の間、及び前記温度を低下させるステップの間に、前記結晶を約20ppm未満の水のある環境に置くステップと、をさらに含む、請求項6に記載の方法。
- 前記第1の強化段階が前記環境の温度を約150℃まで漸進的に上昇させるステップを含み、
前記結晶を前記第1の所定温度に保持するステップが、前記環境を約150℃に維持するステップを含み、
前記第2の強化段階が、前記環境の温度を150℃から約200℃に漸進的に上昇させるステップを含み、
前記結晶を前記第2の所定温度に保持するステップが、前記環境を約200℃に維持するステップを含み、
前記温度を低下させるステップが前記環境を約200℃から室温に徐々に下げるステップを含む、
請求項7に記載の方法。 - 前記環境の温度を約150℃まで上昇させるステップが、前記結晶の温度を約2時間にわたり漸進的に上昇させるステップを含み、
前記環境を約150℃に維持するステップが、前記結晶を約10時間150℃に保持するステップを含み、
前記環境の温度を150℃から約200℃に漸進的に上昇させるステップが、前記結晶の温度を約1時間にわたり漸進的に上昇させるステップを含み、
前記環境を約200℃に維持するステップが、前記結晶を約100時間200℃に保持するステップを含み、
前記環境を室温に下げるステップが、前記結晶の温度を約3時間にわたり漸進的に室温まで低下させるステップを含む、
請求項8に記載の方法。 - 前記結晶を前記第1の所定温度に保持するステップが、−OH結合吸収が第1のレベルであるかどうかを判断し、第1のレベルではない場合には前記温度を150℃近くで保持し続け、第1のレベルである場合には、前記環境の温度を150℃から約200℃に上昇させる前記ステップを行う、ステップをさらに含み、
前記結晶を前記第2の所定温度に保持するステップが、前記‐OH結合吸収が第2のレベルであるかどうかを判断し、第2のレベルではない場合には、前記温度を150℃と200℃との間で保持し続け、第2のレベルである場合には、前記環境を室温に下げる前記ステップを行う、ステップをさらに含む、
請求項8に記載の方法。 - 前記判断するステップがFTIR(フーリエ変換赤外線分光法)を利用するステップを含む、請求項10に記載の方法。
- 吸湿性物質中の水の量を減少させる多段強化アニールプロセスであって、
20ppm未満の水を有する環境に置かれた吸湿性物質の温度を第1の所定温度に上昇させる第1の強化段階と、
‐OH結合吸収が第1のレベルになるまで、前記吸湿性物質を前記環境において前記第1の所定温度に保持するステップと、
前記環境における前記吸湿性物質の温度を、前記第1の所定温度よりも高い第2の所定温度に上昇させる第2の強化段階と、
前記‐OH結合吸収が第2のレベルになるまで、前記吸湿性物質を前記環境において前記第2の所定の温度に保持するステップと、
前記吸湿性物質の温度を室温近くに低下させるステップと、
を含む、多段強化アニール方法。 - 周波数変換結晶をアニールする方法であって、
第1の設定点に前記周波数変換結晶の温度を変更するステップと、
予備焼成期間に前記周波数変換結晶の温度を前記第1の設定点に保持するステップと、
第2の設定点に前記周波数変換結晶の温度を変更するステップと、
焼成期間に前記周波数変換結晶の温度を前記第2の設定点に保持するステップと、
前記周波数変換結晶の前記温度を実質的に室温に変更するステップと、
を含み、
前記焼成期間の間に、FTIR(フーリエ変換赤外線分光法)が赤外線スペクトルの3580cm −1 近くで‐OH吸収ピークが初期値から所定レベルまで削減されたか否かを監視し、前記所定レベルまで削減された場合に前記周波数変換結晶のアニールが完了していると判断する、方法。 - 前記第1の設定点が100℃を超えている、請求項13に記載のアニール方法。
- 前記予備焼成期間が4時間を超えている、請求項13に記載のアニール方法。
- 前記第2の設定点が150℃を超えている、請求項13に記載のアニール方法。
- 前記焼成期間が50時間を超えている、請求項13に記載のアニール方法。
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CN107342526B (zh) | 2018-12-14 |
US20150022805A1 (en) | 2015-01-22 |
KR20190020347A (ko) | 2019-02-28 |
CN110071410B (zh) | 2022-02-01 |
EP2742570B1 (en) | 2018-08-08 |
EP2742570A2 (en) | 2014-06-18 |
CN103782458A (zh) | 2014-05-07 |
WO2013015940A3 (en) | 2013-05-10 |
CN103782458B (zh) | 2017-06-20 |
JP2018041103A (ja) | 2018-03-15 |
US8873596B2 (en) | 2014-10-28 |
US20150299893A1 (en) | 2015-10-22 |
KR102057427B1 (ko) | 2019-12-19 |
JP6254673B2 (ja) | 2017-12-27 |
TWI606291B (zh) | 2017-11-21 |
US9413134B2 (en) | 2016-08-09 |
WO2013015940A2 (en) | 2013-01-31 |
CN110071410A (zh) | 2019-07-30 |
JP2014523551A (ja) | 2014-09-11 |
KR102050699B1 (ko) | 2019-12-02 |
TWI582512B (zh) | 2017-05-11 |
US20130021602A1 (en) | 2013-01-24 |
KR20140049011A (ko) | 2014-04-24 |
TW201312246A (zh) | 2013-03-16 |
JP6073020B2 (ja) | 2017-02-01 |
CN107342526A (zh) | 2017-11-10 |
US9097683B2 (en) | 2015-08-04 |
EP2742570A4 (en) | 2015-06-03 |
KR102028102B1 (ko) | 2019-10-04 |
TW201721266A (zh) | 2017-06-16 |
KR20190020346A (ko) | 2019-02-28 |
JP2017090467A (ja) | 2017-05-25 |
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