JP2018530002A - パルスポンピングを有するシングルパスレーザー増幅器 - Google Patents
パルスポンピングを有するシングルパスレーザー増幅器 Download PDFInfo
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- 238000005086 pumping Methods 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 58
- 230000003595 spectral effect Effects 0.000 claims abstract description 32
- 238000001228 spectrum Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims description 19
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 19
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- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 229910052723 transition metal Inorganic materials 0.000 claims description 3
- 150000003624 transition metals Chemical class 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000010899 nucleation Methods 0.000 claims 2
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000001902 propagating effect Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000009022 nonlinear effect Effects 0.000 abstract description 2
- 239000013590 bulk material Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 7
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- 238000002474 experimental method Methods 0.000 description 6
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- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 150000004770 chalcogenides Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 230000001427 coherent effect Effects 0.000 description 1
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- 230000018109 developmental process Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
31 集束光学系
33 集束光学系
35 パルス列
36 ダイクロイックミラー
37 バルク物質
39 ダイクロイックミラー
40 残余ポンプ放射
70 パルスポンプ
71 ポンプパルス
72 出力
80 シードパルス
81 ダイクロイックミラー
82 パルスピッカー
83 ダイクロイックミラー
84 出力
85 光学高調波
86 ダイクロイックミラー
Claims (24)
- スペクトルが広げられたレーザー出力を有する短パルスでシングルパスの増幅器に基づいたレーザーシステムであって、
シードレーザーと、
増幅されスペクトルが広げられたレーザー出力を放出するように構成されたパルスポンプでシングルパスのレーザー増幅器とを備え、
前記シードレーザーが、超高速中赤外シードパルスの列を放出するように構成され、
前記レーザー増幅器が、少なくとも一つのシードパルスのエネルギーを受けて増幅するように構成され、
前記レーザー増幅器が、自己集束用の臨界パワーを有する非線形光学媒体を備え、
前記非線形光学媒体に対して前記自己集束用の臨界パワーを超えて前記シングルパスのレーザー増幅器において照射が行われることによって、レーザー出力のスペクトルが広げられる、レーザーシステム。 - 前記非線形光学媒体がレーザー利得特性と非線形光学特性とを兼ね備える、請求項1に記載のレーザーシステム。
- 前記シードレーザーと前記レーザー増幅器との間に配置されたパルスピッカーを更に備え、前記パルスピッカーが、増幅用のポンプパルスと同期される少なくとも一つのシードパルスを選択するように構成されている、請求項1に記載のレーザーシステム。
- 前記レーザー増幅器のレーザー利得が増幅されたパルスパワーを与え、前記増幅されたパルスパワーが前記非線形光学媒体の自己集束用の臨界パワーを超える、請求項1に記載のレーザーシステム。
- 放出された少なくとも一つのシードレーザーパルスが、前記非線形光学媒体の自己集束用の臨界パワーを超えるピークパワーを有する、請求項1に記載のレーザーシステム。
- 前記レーザー出力の周波数スペクトルが1オクターブを超える、請求項1に記載のレーザーシステム。
- 前記レーザー出力の波長スペクトル範囲が1.8マイクロメートルから4.5マイクロメートルまでである、請求項1に記載のレーザーシステム。
- 前記シングルパスのレーザー増幅器の光学ポンピングと同時に前記非線形光学媒体のシーディングを行うようにパルスフェムト秒出力を放出するマスター発振器を更に備える請求項1に記載のレーザーシステム。
- 前記非線形光学媒体においてポンプパルスとシードレーザーの放射を重ね合わせて集束させるための光学系を更に備える請求項1に記載のレーザーシステム。
- 残余ポンプパルスからスペクトルが広げられた出力パルスを分離するための光学系を更に備える請求項1に記載のレーザーシステム。
- 少なくとも一つのシードパルスのピークパワーが、前記非線形光学媒体の自己集束用の臨界パワー(PC)を超える、請求項1に記載のレーザーシステム。
- 前記非線形光学媒体における前記マスター発振器からのシードパルスの非線形相互作用が、パルス出力のスペクトル拡大をもたらす、請求項8に記載のレーザーシステム。
- 前記非線形光学媒体が遷移金属ドープII‐VI族半導体の多結晶物質を備える、請求項1に記載のレーザーシステム。
- 前記非線形光学媒体が、Cr:ZnS、Cr:ZnSe、Cr:CdS、Fe:ZnSe、及びFe:ZnSから成る群から選択されている、請求項13に記載のレーザーシステム。
- ポンプレーザーが、Erドープファイバーレーザー、Tmドープファイバーレーザー、及び遷移金属ドープII‐V族半導体バルク媒体レーザーから成る群から選択されている、請求項1に記載のレーザーシステム。
- ポンプレーザーが、ミリジュールでナノ秒のQスイッチバルクEr:YAGレーザーである、請求項1に記載のレーザーシステム。
- 前記シードレーザーのパルス幅が1fsから10psまでの間である、請求項1に記載のレーザーシステム。
- 光学スーパーコンティニウムを発生させる方法であって、
バルク媒体を同時にシーディング及びポンピングして、前記バルク媒体の自己集束用の臨界パワーを超えるようにすることを備え、
同時にシーディング及びポンピングすることが、前記バルク媒体においてシードパルスとポンプパルスとを重ね合わせて、シードパルスの増幅を与え、
前記自己集束用の臨界パワーを超えることが、レーザー出力がスーパーコンティニウムになるような強力なスペクトル拡大を与える、方法。 - フェムト秒レーザーパルスの特性を増強する方法であって、
マスター発振器からのフェムト秒シードパルスをバルク媒体内に伝播させるのと同時に、光学ポンプパルスで前記バルク媒体をポンピングすることを備え、
前記シードパルスがパルスエネルギー及びスペクトル幅を備え、
前記バルク媒体が前記シードパルスのピークパルスパワーを増大させ且つスペクトルを広げるように動作し、
前記ポンプパルスのエネルギーが、前記シードパルスと前記バルク媒体との間のレーザー相互作用を生じさせるのに十分なものであり、
前記レーザー相互作用及び少なくとも一つの非線形過程が、パルスエネルギーが増大し且つスペクトル幅が増大した増強パルスが前記バルク媒体からの出力パルスとして放出されるように、前記フェムト秒シードパルスの特性を増強する、方法。 - 前記出力パルスのスペクトルが、前記マスター発振器からの入力パルスのスペクトルよりも広い、請求項19に記載の方法。
- 前記出力パルスの時間的なパルス幅が、前記マスター発振器からの入力パルスのパルス幅よりも短い、請求項19に記載の方法。
- 前記出力パルスのエネルギーが、前記マスター発振器からの入力パルスのエネルギーよりも大きい、請求項19に記載の方法。
- パルスのスペクトルを広げるための短パルスでシングルパスの増幅器に基づいたレーザーシステムであって、
超高速中赤外シードパルスの列を放出するように構成されたシードレーザーと、
連続ポンピングモードとパルスポンピングモードで選択的に動作するポンプレーザーと、
シングルパスのレーザー増幅器と、
前記レーザー増幅器においてシードパルスをスペクトル的に広げ且つ増幅するように構成された非線形光学媒体とを備え、
前記連続ポンピングモードが前記シードパルスの列の高平均パワー増幅を与え、
前記パルスポンピングモードが前記シードパルスの列の高ピークパワーを与える、レーザーシステム。 - シードパルスがポンプパワー無しでスペクトル的に広げられるパッシブモードを更に備える請求項23に記載のレーザーシステム。
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