Ike pulse nke laser na-ezo aka na ike nke ọkụ laser na-ebufe kwa nkeji oge. Dịka, lasers nwere ike na-ebunye ebili mmiri na-aga n'ihu (CW) ma ọ bụ ebili mmiri na-ebugharị, ebe nke ikpeazụ dị mkpa karịsịa n'ọtụtụ ngwa dị ka nhazi ihe, nhụta anya, akụrụngwa ahụike na nyocha sayensị. Ịghọta njirimara nke ike pulse laser dị oké mkpa maka ịkwalite ọrụ ya na imeziwanye ngwa ngwa.
1. Nkọwa na nha nke ike Pulse
Laser pulse energy bụ ike nke ọ bụla laser pulse wepụtara, a na-atụkarị ya na joules (J). N'adịghị ka lasers na-aga n'ihu na-efegharị efegharị (CW), lasers pulsed na-ahapụ ike n'ime obere oge, ịdị ukwuu nke ike na-emetụtakarị oge usu (obosara usu) na ike kacha elu.
Enwere ike gbakọọ ume iku ume site na iji usoro a: E = Ppeak × τ. Ebe E bụ ume pulse (joules), Ppeak bụ ike kacha elu nke pulse (watts), na τ bụ oge pulse (sekọnd). Nke a pụtara na ike pulse na-emetụta ma ike elu yana obosara usu.
2. Ihe na-emetụta ike Pulse
Ọtụtụ ihe na-emetụta ike pulse nke laser, gụnyere:
①Nhazi na ụdị laser:
Ụdị laser dị iche iche na-emetụta oke ume ume. Dịka ọmụmaatụ, lasers steeti siri ike na-enye ume ọkụ dị elu, dabara maka ngwa chọrọ mmepụta ike dị elu. Fiber lasers, n'aka nke ọzọ, nwere ike ịmepụta pulses nwere ike dị elu site n'ịgbanwe ogologo ogologo ha.
②Ogologo Pulse (Obosara Pulse):
N'ịbụ nke dị mkpụmkpụ nke obosara usu, na-eme ka ike dị elu dị elu na oge enyere, nke na-enye ohere maka ume ume dị elu. A na-agbanwekarị obosara pulse na lasers pulsed n'etiti nanoseconds na picoseconds, na-eji obere pulses eme ihe na ngwa dị elu nke ọma n'ihi ike ha dị elu.
③Ike Laser na arụmọrụ ntụgharị ike:
Ịrụ ọrụ nke laser na-ekpebi mmepụta ike ozugbo. Ụfọdụ sistemu laser nwere ike ịkwalite arụmọrụ ntughari site n'ịkwalite nhazi nke uru nke uru ma ọ bụ oghere laser, si otú ahụ na-abawanye ume pulse.
④Igwe ọkụ laser:
N'ọtụtụ usoro laser dị elu, a na-eji amplifiers mee ka ike mmepụta ike dịkwuo elu. Site n'ịkwalite ọkwa dị iche iche, ike pulse nwere ike ịkwalite nke ọma.
⑤Laser Drive ugbu a:
The mbanye ugbu a nke laser diode ma ọ bụ laser usoro bụ isi ihe na-emetụta ya mmepụta ike na usu ume. Site n'ịgbanwe nke ugbu a, enwere ike gbanwee ọnọdụ mkpali nke laser, si otú a na-emetụta mmepụta ume pulse.
3. Ngwa nke Laser Pulse Energy
The size nke laser usu ume na-ekpebi ya kwesịrị ekwesị maka dị iche iche ubi. Ụfọdụ ngwa a na-ahụkarị gụnyere:
①Nhazi ihe:
Na laser ịgbado ọkụ, ịcha, na osise, pulse ume ike-kpọmkwem ịchịkwa iji nweta oru oma na elu-nkenke nhazi. Ike pulse dị elu dabara adaba maka nhazi ihe igwe, ebe a na-eji obere ume ike eme ihe maka ọgwụgwọ elu dị mma.
②Ngwa ahụike:
A na-eji laser pulsed eme ihe na ngalaba ahụike, ọkachasị maka ịwa ahụ laser, ọgwụgwọ anụ ahụ, na ọgwụgwọ anya. Dịka ọmụmaatụ, lasers pulsed nwere ike dị elu nwere ike ilekwasị anya laser ike nke ogologo ebili mmiri dị iche iche na obere mpaghara maka imebi anụ ahụ na-arịa ọrịa ma ọ bụ ịgwọ ọnọdụ anya.
③LiDAR na nhụta anya:
Teknụzụ LiDAR dabere na lasers ume iku ume dị elu maka nhazi na onyonyo. Na nleba anya gburugburu ebe obibi, ịnya ụgbọ ala kwụụrụ onwe ya na onyunyo drone, nha ike pulse na-emetụta anya nchọpụta na mkpebi nke sistemụ LiDAR.
④Nnyocha sayensị:
Laser pulsed na-arụkwa ọrụ dị mkpa na nnwale na physics, kemistri, na bayoloji. Site n'ịchịkwa ike pulse nke ọma, ndị ọkà mmụta sayensị nwere ike ịme nyocha spectroscopy nke na-akpata laser dị elu, ngwa ngwa ngwa ngwa na nyocha nyocha laser.
4. Ụzọ na-abawanye ike Pulse
Ụzọ ndị a na-ejikarị eme ka ike pulse laser dịkwuo elu gụnyere:
①Nweta nkwalite Ọkara:
Site n'ịhọrọ ihe kwesịrị ekwesị uru ọkara na optimizing imewe nke laser cavity, ike mmepụta nke laser nwere ike ịba ụba.
②Mmụba laser ọtụtụ ọkwa:
Multi-stage amplifiers nwere ike jiri nwayọọ nwayọọ na-amụba pulse ume nke laser izute chọrọ nke dị iche iche ngwa.
③Na-abawanye obosara Drive ugbu a ma ọ bụ Pulse:
Ịgbanwe draịva laser ugbu a ma ọ bụ obosara usu nwere ike ịkpata ume usu ka ukwuu.
④Teknụzụ mkpakọ akwara:
N'iji usoro mkpakọ pulse, ogologo oge nke pulse nwere ike dị mkpụmkpụ, na-abawanye ike ya ma na-ahapụkwu ike n'ime oge dị mkpirikpi.
5. Nkwubi okwu
Laser pulse energy bụ isi ihe na-emetụta arụmọrụ na ngwa nke lasers na mpaghara dị iche iche. Site na ọganihu na-aga n'ihu na teknụzụ laser, laser pulsed ga-enwe ngwa sara mbara n'ọtụtụ ụlọ ọrụ. Site na nhazi nkenke ruo n'ichepụta anya na ọgwụgwọ ahụike, mmepụta ike dị elu nke lasers pulsed na-emepe ohere ọhụrụ. Ịghọta echiche ndị bụ isi nke ike pulse na ihe ndị na-emetụta ya nwere ike inye aka mee ka nhọrọ sayensị karịa mgbe ị na-emepụta na itinye usoro laser.
Oge nzipu: Feb-11-2025