Kawruh Profesional

Sumber Cahya Superradiance

2022-06-23
Sumber cahya superradiance (uga dikenal minangkasumber cahya ASE) minangka sumber cahya broadband adhedhasar superradiance (sumber cahya putih). (Iku asring salah disebut sumber cahya superluminescent, kang adhedhasar fénoména beda disebut superfluorescence.) Umumé, sumber cahya superluminescent ngemot medium gain laser sing bungah kanggo radiate cahya lan banjur digedhèkaké kanggo emit cahya.
Sumber cahya superradiant nduweni koherensi temporal banget amarga bandwidth radiasi sing gedhe (dibandhingake karo laser). Iki banget nyuda kemungkinan bintik-bintik, sing asring katon ing sinar laser. Nanging, amarga koherensi spasial sing dhuwur, cahya output saka sumber cahya superradiant fokus kanthi apik (padha karo sinar laser), lan mulane luwih kuat tinimbang sing dipikolehi saka lampu pijar. Mulane, sumber cahya iki cocok banget kanggo tomografi koherensi optik (Optical Coherence Tomography, OCT), karakterisasi piranti (ing komunikasi serat optik), giroskop lan sensor serat optik. Deleng entri Dioda Superluminescent kanggo aplikasi sing luwih rinci.
Sumber cahya superluminescent sing paling penting yaikudioda superluminescent SLDlan amplifier serat. Sumber cahya adhedhasar serat nduweni daya output sing luwih dhuwur, dene SLD luwih cilik lan luwih murah. Bandwidth radiasi saka loro-lorone paling sethithik sawetara nanometer lan puluhan nanometer, lan kadhangkala luwih saka 100 nanometer.
Kaya kabeh sumber ASE dhuwur-gain, dipatèni ati-ati saka saran optik (contone, bayangan saka bandar serat) dibutuhake, supaya bisa gawé efek lasing parasitic. Kanggo piranti sing nggunakake serat optik, panyebaran Rayleigh ing jero serat optik bisa nduwe pengaruh ing indeks kinerja pungkasan.
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