Pulse nisa iko naLaser bugun jini kulafasaha
Sarrafa bugun bugun jini na Laser yana ɗaya daga cikin mahimman hanyoyin haɗin gwiwa a cikifasahar laser, wanda kai tsaye yana rinjayar aikin aiki da tasirin aikin laser. Wannan takarda za ta tsara tsarin sarrafa nisa na bugun jini, sarrafa mitar bugun jini da fasaha mai alaƙa, da ƙoƙarin zama ƙwararru, cikakke kuma mai ma'ana.
1. Ma'anar bugun bugun jini
Nisa na Laser yana nufin tsawon lokacin bugun bugun laser, wanda shine mahimmin ma'auni don bayyana halayen lokacin fitarwar laser. Don ultra-short pulse lasers (kamar nanosecond, picosecond da femtosecond lasers), guntuwar faɗuwar bugun jini, mafi girman ƙarfin ƙwanƙwasa, da ƙaramin tasirin zafi, wanda ya dace da mashin ɗin daidaitaccen injin ko bincike na kimiyya.
2. Abubuwan da ke damun Laser Faɗin bugun bugun bugun jini Faɗin bugun jini na Laser yana shafar abubuwa da yawa, galibi gami da abubuwa masu zuwa:
a. Halayen matsakaicin riba. Daban-daban iri kafofin watsa labarai suna da musamman makamashi matakin tsarin da haske rayuwa, wanda kai tsaye rinjayar tsara da bugun jini nisa na Laser bugun jini. Misali, Laser mai ƙarfi, Nd:YAG lu'ulu'u da Ti: Sapphire lu'ulu'u ne na gama gari mai ƙarfi na Laser. Laser gas, irin su carbon dioxide (CO₂) lasers da helium-neon (HeNe) lasers, yawanci suna samar da tsayin daka mai tsayi saboda tsarin kwayoyin su da kyawawan kaddarorin jihar; Semiconductor Laser, ta hanyar sarrafa lokacin sake haɗawa mai ɗaukar kaya, na iya cimma nisa na bugun jini daga nanoseconds zuwa picoseconds.
Zane na Laser cavity yana da tasiri mai mahimmanci akan nisa na bugun jini, ciki har da: tsayin rami, tsawon rami na laser yana ƙayyade lokacin da ake buƙata don haske don tafiya sau ɗaya da sake a cikin rami, rami mai tsayi zai haifar da tsayin bugun jini mai tsayi, yayin da guntu mai guntu yana taimakawa wajen samar da ƙananan ƙwayoyin cuta; Tunani: Mai nuni tare da babban tunani na iya ƙara yawan ƙwayar photon a cikin rami, don haka inganta tasirin riba, amma babban tunani na iya ƙara hasara a cikin rami kuma ya shafi kwanciyar hankali na bugun jini; Matsayin matsakaicin riba da matsayi na matsakaicin riba a cikin rami kuma zai shafi lokacin hulɗa tsakanin photon da matsakaicin riba, sannan kuma ya shafi faɗin bugun jini.
c. Q-switching fasaha da kuma yanayin-kulle fasaha hanyoyi biyu masu muhimmanci don gane bugun jini Laser fitarwa da bugun jini ka'idar.
d. Tushen famfo da yanayin famfo Tsarin wutar lantarki na tushen famfo da zaɓin yanayin famfo shima yana da tasiri mai mahimmanci akan faɗin bugun jini.
3. Common bugun jini nisa iko hanyoyin
a. Canja yanayin aiki na Laser: yanayin aiki na Laser zai shafi kai tsaye nisa bugun bugun jini. Za a iya sarrafa nisa na bugun jini ta hanyar daidaita sigogi masu zuwa: mita da ƙarfin tushen famfo, shigar da makamashi na tushen famfo, da matakin jujjuyawar yawan jama'a a cikin matsakaicin riba; The reflectivity na fitarwa ruwan tabarau canza feedback yadda ya dace a cikin resonator, don haka rinjayar bugun jini samuwar tsari.
b. Sarrafa bugun bugun jini siffar: kai tsaye daidaita bugun bugun jini nisa ta canza siffar bugun jini Laser.
c. Na'urar daidaitawa na yanzu: Ta hanyar canza yanayin fitarwa na wutar lantarki don daidaita rarraba matakan makamashi na lantarki a cikin matsakaicin Laser, sannan canza girman bugun jini. Wannan hanyar tana da saurin amsawa kuma ta dace da yanayin aikace-aikacen da ke buƙatar daidaitawa cikin sauri.
d. Canja juzu'i: ta sarrafa yanayin sauyawa na Laser don daidaita girman bugun jini.
e. Kula da yanayin zafi: Canjin zafin jiki zai shafi tsarin matakin makamashi na lantarki na Laser, ta haka a kaikaice yana shafar faɗin bugun jini.
f. Yi amfani da fasahar daidaitawa: Fasahar daidaitawa hanya ce mai inganci don sarrafa faɗin bugun bugun jini daidai.
Modulation Laserfasaha fasaha ce da ke amfani da Laser a matsayin mai ɗaukar hoto kuma tana loda bayanai a kanta. Dangane da dangantaka tare da Laser za a iya raba zuwa na'ura na ciki da kuma na waje modulation. Tsarin ciki na ciki yana nufin yanayin daidaitawa wanda aka ɗora siginar da aka daidaita a cikin aiwatar da oscillation na laser don canza sigogin oscillation na laser kuma don haka canza halayen fitarwa na laser. Motsi na waje yana nufin yanayin daidaitawa wanda aka ƙara siginar haɓakawa bayan an samar da Laser, kuma ana canza kaddarorin Laser ɗin fitarwa ba tare da canza sigogin oscillation na laser ba.
Hakanan za'a iya rarraba fasahar daidaitawa bisa ga nau'ikan daidaitawa mai ɗaukar hoto, gami da daidaitawar analog, daidaitawar bugun jini, daidaitawar dijital (mosulation code modulation); Dangane da sigogin daidaitawa, an raba shi zuwa haɓaka ƙarfin ƙarfi da daidaita yanayin lokaci.
Intensity modulator: Ana sarrafa nisa bugun jini ta hanyar daidaita canjin ƙarfin hasken laser.
Modulator mataki: Ana daidaita girman bugun jini ta hanyar canza yanayin motsin haske.
Amfuta-kulle-ƙulle: Ta hanyar ƙirar ƙararrawa ta kulle-kulle, ana iya daidaita faɗin bugun bugun laser daidai.
Lokacin aikawa: Maris 24-2025