Pụrụ icheultrafast laserakụkụ nke abụọ
Mgbasasa na pulse na-agbasa: Mgbasa igbu oge otu
Otu n'ime ihe ịma aka ọrụ aka siri ike zutere mgbe ị na-eji laser ultrafast bụ idowe ogologo oge nke ultra-short pulses na-ebute na mbụ.laser. Ọkpụkpụ Ultrafast na-enwekarị ike imebi oge, nke na-eme ka ọkpụkpụ ahụ dị ogologo. Mmetụta a na-akawanye njọ ka oge nke ụbụrụ mbụ na-ebelata. Ọ bụ ezie na lasers ultrafast nwere ike ịmịpụta mkpụrụ akụ na-ewe ihe dị ka sekọnd 50, enwere ike ịbawanye ha n'oge site na iji enyo na lenses na-ebufe ụbụrụ ahụ na ebe a na-achọsi ike, ma ọ bụ ọbụna na-ebufe ụbụrụ site na ikuku.
A na-agbakọ mgbagha oge a site na iji otu ihe akpọrọ group delayed dispersion (GDD), nke a makwaara dị ka mgbasa nke abụọ. N'ezie, enwerekwa usoro mgbasa ozi dị elu nke nwere ike imetụta oge nkesa nke ultrafart-laser pulses, mana na omume, ọ na-ezukarị naanị iji nyochaa mmetụta nke GDD. GDD bụ uru dabere ugboro ugboro nke dabara n'ahịrị na ọkpụrụkpụ nke ihe enyere. Optics mbufe dị ka oghere, windo, na ihe ebumnobi ya na-enwekarị ụkpụrụ GDD dị mma, nke na-egosi na ozugbo mkpịpị mpikota onu nwere ike inye optics mbufe ogologo oge karịa nke a na-ebupụta.usoro laser. Ngwa ndị nwere frequencies dị ala (ya bụ, ogologo wavelengths) na-agbasa ngwa ngwa karịa akụrụngwa nwere frequencies dị elu (ya bụ, ogologo wavelengths dị mkpụmkpụ). Ka pulse na-agafe ihe na-aga n'ihu na-aga n'ihu, ogologo nfe dị na pulse ga-aga n'ihu na-aga n'ihu na oge. N'ihi na mkpumkpu usu durations, ya mere wider bandwit, a mmetụta bụ n'ihu ikwubiga okwu ókè na pụrụ ịkpata ịrịba usu oge distortion.
Ngwa laser Ultrafast
spectroscopy
Ebe ọbịbịa nke isi iyi laser ultrafast, spectroscopy bụ otu n'ime mpaghara ngwa ha bụ isi. Site n'ibelata oge pulse na femtosecond ma ọ bụ ọbụlagodi nkeji nkeji, usoro ike na physics, kemistri na bayoloji nke na-agaghị ekwe omume n'akụkọ ihe mere eme nwere ike nweta ugbu a. Otu n'ime isi usoro bụ mmegharị atomic, na nleba anya nke mmegharị atomic emewo ka nghọta sayensị dị na usoro ndị dị mkpa dị ka vibration molecular, dissociation molecular dissociation and energy transfer in photosynthetic proteins.
bioimaging
Ihe kacha elu-ike ultrafast lasers na-akwado usoro na-abụghị nke ntanetị ma melite mkpebi maka onyonyo ndu, dị ka microscopy ọtụtụ foto. N'ime usoro foto ọtụtụ, iji mepụta mgbama na-abụghị nke sitere na usoro ndu ma ọ bụ ebumnuche fluorescent, foton abụọ ga-adaba na oghere na oge. Usoro a na-adịghị ahụkebe na-eme ka mkpebi onyonyo dịkwuo mma site na ibelata akara ngosi nhụsianya n'azụ na-emebi ọmụmụ nke usoro foto otu. A na-egosipụta ndabere mgbama dị mfe. Mpaghara mkpali dị nta nke microscope multiphoton na-egbochikwa phototoxicity ma na-ebelata mmebi nke ihe nlele ahụ.
Onyonyo 1: Ihe atụ eserese nke ụzọ beam na nnwale microscope nke ọtụtụ foto
Nhazi ihe laser
Isi mmalite laser Ultrafast agbanweela micromachining laser na nhazi ihe n'ihi ụzọ pụrụ iche nke ultrashort pulses si eji ihe emekọrịta ihe. Dị ka e kwuru na mbụ, mgbe ị na-ekwurịta banyere LDT, ultrafast pulse duration bụ ngwa ngwa karịa oge oge nke mgbasa ozi okpomọkụ n'ime lattice nke ihe onwunwe. Laser Ultrafast na-emepụta mpaghara okpomọkụ emetụtara nke ukwuu karịananosecond pulsed lasers, na-ebute mfu mbepụ dị ala yana ịrụ ọrụ nke ọma karị. Ụkpụrụ a dịkwa na ngwa ahụike, ebe mmụba dị ukwuu nke igbutu ultrafart-laser na-enyere aka belata mmebi nke anụ ahụ gbara ya gburugburu ma na-eme ka ahụmahụ onye ọrịa dịkwuo mma n'oge ịwa ahụ laser.
Atosecond pulses: ọdịnihu nke ultrafast lasers
Ka nyocha na-aga n'ihu na-aga n'ihu na laser ultrafast, a na-emepụta isi iyi ọkụ ọhụrụ na mma nke nwere ogologo oge pulse dị mkpụmkpụ. Iji nweta nghọta na usoro anụ ahụ ngwa ngwa, ọtụtụ ndị na-eme nchọpụta na-elekwasị anya na ọgbọ nke pulses nke abụọ - ihe dịka 10-18 s na oke ultraviolet (XUV). Atosecond pulses na-enye ohere nleba anya nke mmegharị eletrọn ma melite nghọta anyị maka usoro eletrọnịkị na igwe igwe quantum. Ọ bụ ezie na njikọ XUV attosecond lasers n'ime usoro mmepụta ihe enwebeghị ọganihu dị ịrịba ama, nchọpụta na-aga n'ihu na ọganihu n'ọhịa ga-fọrọ nke nta ka ọ bụrụ na ọ ga-eme ka nkà na ụzụ a pụta na ụlọ nyocha na n'ichepụta, dị ka ọ dị na femtosecond na picosecond.isi mmalite laser.
Oge nzipu: Jun-25-2024