Ukubuka konke kwama-lasers agcwele

Ukubuka konkeAma-Lasers afakiwe

Indlela eqondile yokukhiqizai-laserAma-pulses ukwengeza i-modulator ngaphandle kwe-laser eqhubekayo. Le ndlela ingakhiqiza i-picosecond pulse esheshayo, yize ilula, kepha amandla okukhanya kanye namandla aphezulu awakwazi ukwedlula amandla akhanyayo. Ngakho-ke, indlela esebenza kahle yokukhiqiza ama-laser pulses ukuguqula emgodini we-laser, ukugcina amandla ngesikhathi esingesikhashana sesitimela se-pulse bese uyikhulula ngesikhathi. Amasu amane ajwayelekile asetshenziselwa ukukhiqiza ama-pulses nge-Laser Cavity Movie yokushintshashintsha, ukushintshana kwe-Q

I-Get Shintsha ikhiqiza ama-pulses amafushane ngokuguqula amandla epompo. Isibonelo, ama-lasemiconductor ashintshiwe ama-lasers angakhiqiza ama-pulses avela kuma-nanosecond ambalwa aya kuma-picosecond ayikhulu ngokushintshashintsha kwamanje. Yize amandla we-pulse aphansi, le ndlela ivumelana nezimo kakhulu, njengokuhlinzeka imvamisa ephindaphindekayo yokuphindaphinda kanye nobubanzi be-pulse. Ngo-2018, abacwaningi e-University of Tokyo babike i-femtosecond ball-snice-snice semicenductor laser, emele impumelelo ebhodleleni leminyaka engama-40.

Ama-pulses aqinile we-nanosecond ngokuvamile akhiqizwa ama-lasers we-Q-ashintshiwe, akhishwe ohambweni oluningi oluyindilinga emgodini, futhi amandla we-pulse asezingeni lama-miclijoules ambalwa afinyelela kuma-jeules ambalwa, kuya ngosayizi wohlelo. Amandla aphakathi (ngokuvamile ngaphansi kwe-1 μj) I-Picosecond kanye ne-Ficosecond Pulses akhiqizwa ikakhulu ngama-lasers akhiyiwe ngemodi. Kune-pulses eyodwa noma eziningi ze-ultrashort ku-laser resonator ejikeleza ngokuqhubekayo. I-intracavity ngayinye i-intracavity Pulse idlulisa ukushaya kwesibuko okuhlangene okukhiphayo, futhi ukube kuvame phakathi kwe-10 mhz ne-100 GHz. Isibalo esingezansi sibonisa ukuhlakazwa okujwayelekile okujwayelekile (i-Andi) solit ye-soliton femtosecondI-Fibre Laser device, iningi lazo lingakhiwa kusetshenziswa izingxenye ezijwayelekile ze-thorlabs (i-fiber, lens, khweyela kanye netafula elifudumayo).

I-Cavity Treating Technique ingasetshenziselwaAma-Q-Shintsha ama-LasersUkuthola ama-pulses amafushane kanye nama-lasers akhiyiwe amamodi ukukhulisa amandla okugembula ngokumbilwa okuphansi.

Isizinda Sesikhathi Nama-Frequency Domain Pulses
Ukwakheka okuqondile kokushaywa kwenhliziyo nesikhathi ngokuvamile kulula futhi kungavezwa yimisebenzi yeGaussian ne-Secy². Isikhathi sokuphamba (esaziwa nangokuthi i-pulse Width) sivame ukuvezwa ngobubanzi bezinxenye-ukuphakama (i-FWHM) inani, okungukuthi, ububanzi lapho amandla okubona okungenani uhhafu wamandla aphezulu; I-Q-Shinchated Laser ikhiqiza ama-nanosecond ama-pulses amafushane afushane
Ama-Lasers akhiyiwe amamodi akhiqiza ama-pulses afushane we-Ultra-amafushane ngokulandelana kwamashumi ama-Picoseconds kuma-femtoseconds. I-elekthronikhi enesivinini ephezulu ingafinyelela kumashumi ama-picoseconds kuphela, futhi ama-pulses amafushane angalinganiswa kuphela ngobuchwepheshe obubonayo obufana nama-autocorrelators, ixoxo nesicabucabu. Ngenkathi i-nanosecond noma ama-pulses amade aguqule aguqule ububanzi bawo njengoba behamba, ngisho nangaphezulu kwamabanga amade, ama-eltra-amafushane ama-pulses angathintwa yizici ezahlukahlukene:

Ukuhlakazeka kungaholela ekusakazeni okukhulu, kepha kungavuselelwa kabusha ngokuhlakazeka okuphambene. Umdwebo olandelayo ukhombisa ukuthi i-thorlabs femtosecond Pulsecond Pulse Compressoror inxekeza ukuhlakazeka kwesiMicroscope.

Ukungahloniphi ngokuvamile akubathinta ngokuqondile ububanzi bokushaya ngamandla, kepha bandisa umkhawulokudonsa, okwenza ukushaya ngamandla kuthambekele ekusakazweni ngesikhathi sokusakazwa. Noma yiluphi uhlobo lwefiber, kufaka phakathi eminye imithombo yezindaba nge-bandwidth elinganiselwe, lungathinta ukwakheka kwe-bandwidth noma i-ultra-emfushane ukushaya, kanye nokwehla kwe-bandwidth kungaholela ekwandiseni ngesikhathi; Kukhona futhi amacala lapho ububanzi be-pungse be-pulse chirse buba mfushane lapho i-spectrum iba mncane.