Pulse Energy ea Lasers

Pulse energy ea laser e bolela matla a fetisoang ke laser pulse ka unit of time. Ka tloaelo, li-laser li ka ntša maqhubu a tsoelang pele (CW) kapa maqhubu a pulsed, 'me ea morao-rao e le ea bohlokoa ka ho khetheha lits'ebetsong tse ngata tse kang ho sebetsana le thepa, ho utloa ka thōko, lisebelisoa tsa bongaka le lipatlisiso tsa saense. Ho utloisisa litšobotsi tsa laser pulse energy ho bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea eona le ho ntlafatsa ts'ebetso ea ts'ebeliso.

1. Tlhaloso le Tekanyo ea Matla a Pulse

Laser pulse energy ke matla a lokolloang ke laser pulse ka 'ngoe, hangata e lekanngoa ka li-joules (J). Ho fapana le continuous wave (CW) lasers, pulsed lasers e lokolla matla ka nako e khuts'oane, 'me boholo ba matla hangata bo amana le nako ea ho otla ha pelo (bophara ba pulse) le matla a holimo.

Matla a ho otla ha pelo a ka baloa ka mokhoa o latelang: E ​​= Ppeak × τ. Moo E e leng matla a pulse (joules), Ppeak ke matla a phahameng a sekhahla (watts), 'me τ ke nako ea ho otla ha pelo (metsotsoana). Sena se bolela hore matla a pulse a amana ka kotloloho le matla a holimo le bophara ba sekhahla.

2. Lintlha tse Amang Pulse Energy

Lintlha tse 'maloa li susumetsa matla a pulse ea laser, ho kenyelletsa:

①Mofuta le mofuta oa Laser:
Mefuta e fapaneng ea lasers e ama boholo ba matla a pulse. Mohlala, li-laser tsa solid-state hangata li fana ka matla a phahameng a pulse, a loketseng lits'ebetso tse hlokang tlhahiso e phahameng ea matla. Li-laser tsa fiber, ka lehlakoreng le leng, li ka hlahisa li-pulse ka matla a phahameng ka ho fetola bolelele ba tsona.

②Nako ea Pulse (Pulse Width):
Ha bophara ba pulse bo le khuts'oane, matla a phahameng a phahameng ka nako e itseng, e leng se lumellang matla a phahameng a ho otla ha pelo. Bophara ba "pulse lasers" hangata bo fetoha lipakeng tsa li-nanoseconds le picoseconds, 'me likhahla tse khutšoane li sebelisoa haholo lits'ebetsong tse nepahetseng haholo ka lebaka la matla a tsona a holimo.

③Matla a Laser le Phetoho ea Matla:
Ho sebetsa hantle ha laser ka kotloloho ho etsa qeto ea tlhahiso ea matla. Lisistimi tse ling tsa laser li ka ntlafatsa ts'ebetso ea phetoho ka ho ntlafatsa moralo oa sebaka sa phaello kapa sekoti sa laser, ka hona, ho eketsa matla a ho otla.

④Li-amplifiers tsa Laser:
Lits'ebetsong tse ngata tsa laser tse matla a phahameng, liamplifiers li sebelisoa ho eketsa tlhahiso ea matla. Ka ho holisa mekhahlelo e mengata, matla a pulse a ka matlafatsoa haholo.

⑤Laser Drive Hona Joale:
Matla a koloi a laser diode kapa laser system ke ntlha ea bohlokoa e susumetsang matla a eona a hlahisoang le matla a pulse. Ka ho lokisa hona joale, boemo ba ho hlasimolla ha laser bo ka fetoloa, kahoo bo ama tlhahiso ea matla a pulse.

3. Likopo tsa Laser Pulse Energy

Boholo ba matla a laser pulse a etsa qeto ea ho tšoaneleha ha ona libakeng tse fapaneng. Lisebelisoa tse ling tse tloaelehileng li kenyelletsa:

①Material Processing:
Ka laser welding, cutting, and fating, pulse energy e ka laoloa ka mokhoa o nepahetseng ho finyella ts'ebetso e sebetsang hantle le e phahameng haholo. Matla a phahameng a pulse a loketse ho sebetsana le lisebelisoa tsa tšepe, ha li-pulse tse fokolang matla li sebelisoa bakeng sa phekolo e ntle ea holim'a metsi.

②Likopo tsa Bongaka:
Li-laser tsa pulsed li sebelisoa haholo lefapheng la bongaka, haholo-holo bakeng sa opereishene ea laser, kalafo ea letlalo, le kalafo ea mahlo. Mohlala, li-laser tsa pulsed tse nang le matla a phahameng li ka lebisa matla a laser a bolelele bo itseng ba maqhubu libakeng tse nyane bakeng sa ho ntša lisele tse kulang kapa ho alafa maemo a mahlo.

③LiDAR le Remote Sensing:
Theknoloji ea LiDAR e itšetlehile ka li-lasers tse phahameng tsa pulse energy bakeng sa mebala e nepahetseng le ea ho nahana. Tekong ea tikoloho, ho khanna ka boithaopo, le leihlo la drone, boholo ba matla a pulse bo ama ka kotloloho sebaka sa ho lemoha le tharollo ea sistimi ea LiDAR.

④Patlisiso ea Mahlale:
Li-laser tsa pulsed le tsona li bapala karolo ea bohlokoa litekong tsa fisiks, k'hemistri le baeloji. Ka ho laola matla a ho otla ha pelo ka nepo, bo-ramahlale ba ka etsa spectroscopy ea laser-induced spectroscopy e nepahetseng haholo, ho potlakisa likaroloana, le lipatlisiso tsa laser cooling.

4. Mekhoa ea ho Eketsa Matla a Pulse

Mekhoa e tloaelehileng ea ho eketsa matla a laser pulse e kenyelletsa:

①Fumana Ntlafatso e Hare:
Ka ho khetha sebaka se loketseng sa ho fumana chelete le ho ntlafatsa moralo oa sekoti sa laser, matla a hlahisoang ke laser a ka eketseha.

②Amplification ea Laser ea mekhahlelo e mengata:
Li-amplifiers tsa mekhahlelo e mengata li ka eketsa butle butle matla a pulse ea laser ho fihlela litlhoko tsa lits'ebetso tse fapaneng.

③Ho eketsa Bophara ba Drive Hona Joale kapa Pulse Width:
Ho fetola bophara ba laser drive hona joale kapa pulse ho ka fella ka matla a maholo a ho otla.

④Theknoloji ea Pulse Compression:
Ka ho sebelisa mekhoa ea khatello ea pulse, nako ea pulse e ka khutsufatsoa, ​​ea eketsa matla a eona a holimo le ho lokolla matla a mangata ka nako e khutšoanyane.

5. Qetello

Laser pulse energy ke parameter ea bohlokoa e amang ts'ebetso le ts'ebeliso ea li-lasers ka kotloloho mafapheng a fapaneng. Ka tsoelo-pele e tsoelang pele ho theknoloji ea laser, li-laser tsa pulsed li tla ba le ts'ebeliso e pharaletseng liindastering tse ngata. Ho tloha ho machining a nepahetseng ho isa ho li-remote sensing le kalafo ea bongaka, tlhahiso e phahameng ea matla ea li-laser tsa pulsed e bula menyetla e mecha. Ho utloisisa menahano ea mantlha ea matla a pulse le lintlha tse susumetsang ho ka thusa ho etsa liqeto tse ngata tsa mahlale ha ho raloa le ho sebelisa lisebelisoa tsa laser.