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(Chirped Mirror Pair)啁啾鏡用于補(bǔ)償超短激光脈沖與色散相關(guān)的傳播時(shí)間差。如果 GDD 曲線中的振蕩很強(qiáng)，則需要啁啾鏡對(duì)（由兩個(gè)啁啾鏡組成）。對(duì)于高帶寬的鏡子尤其如此。

啁啾鏡的 GDD 曲線并不代表直線曲線，而是顯示振蕩。其中，這些強(qiáng)度有多強(qiáng)取決于光譜帶寬。對(duì)于小于同類布拉格鏡帶寬的 GDD 帶寬，振蕩相當(dāng)小。另一方面，具有高帶寬的鏡子表現(xiàn)出強(qiáng)烈的 GDD 振蕩。

LAYERTEC 啁啾鏡對(duì) (超快激光反射鏡),LAYERTEC 啁啾鏡對(duì) (超快激光反射鏡)

通用參數(shù)

負(fù)色散鏡對(duì)的 GDD 光譜

可以通過(guò)使用相應(yīng)的鏡對(duì)來(lái)實(shí)現(xiàn)校正。它們由兩個(gè)具有相反 GDD 曲線的不同涂層介電鏡組成，激光束可以根據(jù)需要在兩個(gè)鏡之間來(lái)回反射（見(jiàn)圖）。這些鏡子針對(duì)小入射角進(jìn)行了優(yōu)化，從而可以實(shí)現(xiàn)大量反射。

啁啾鏡對(duì)按型號(hào)82條

型號(hào)	規(guī)格	正/背面形狀	涂層
Chirped Mirror Pair 148921 Corning 7980 2F or equal	∅ = 25 mmt = 6.35 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HRp(5°,340-440nm)>99% GDD(5°,340-440nm)=-25fs²
Chirped Mirror Pair 148920 Corning 7980	40 mm  x 10 mm with marked corner t = 12.5 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HRp(5°,340-440nm)>99% GDDp(5°,340-440nm)=-25fs²
Chirped Mirror Pair 102504 Corning 7980 2F or equal	∅ = 12.7 mmt = 6.35 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,360-480nm)>99.5%, GDD=-15fs²
Chirped Mirror Pair 103851 Corning 7980 2F or equal	∅ = 25 mmt = 6.35 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,360-480nm)>99.5% GDDu(0-8°,360-480nm)=15fs²
Chirped Mirror Pair 107549 Corning 7980 2F or equal	∅ = 25 mmt = 6.35 mm	Front Side (S2) concave r = 250 mm Rear Side (S1) plane	Front Side (S2) PR(0°,430-690nm)=99.5(±0.3%), GDD=-20fs² Rear Side (S1) AR(0°,430-690nm)
Chirped Mirror Pair 148545 Corning 7980	40 mm  x 10 mm with marked corner t = 12.5 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,470-810nm)>99.7% GDD(0°,470-810nm)=-40fs²
Chirped Mirror Pair 109812 Corning 7980 2F or equal	∅ = 25 mmt = 6.35 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,480-640nm)>99.85%, GDD=-70--40fs²
Chirped Mirror Pair 109811 Corning 7980	40 mm  x 10 mm with marked corner t = 12.5 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,480-640nm)>99.85%, GDD=-70--40fs²
Chirped Mirror Pair 109936 Corning 7980 2F or equal	∅ = 12.7 mmt = 6.35 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,480-660nm)>99.85%, GDD=-22fs²
Chirped Mirror Pair 109937 Corning 7980 2F or equal	∅ = 25 mmt = 6.35 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,480-660nm)>99.85%, GDD=-22fs²
Chirped Mirror Pair 109935 Corning 7980	40 mm  x 10 mm with marked corner t = 12.5 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,480-660nm)>99.85%, GDD=-22fs² Rear Side (S1) HR(0°,440-660nm)>99.85%, GDD=-22fs²
Chirped Mirror Pair 109384 Corning 7980	45 mm  x 15 mmt = 12.5 mm	Front Side (S2) plane Rear Side (S1) plane	Front Side (S2) HR(0°,480-660nm)>99.85%, GDD=-22fs²