Simba rekupuruzira relaser zvinoreva simba rinofambiswa nelaser pulse pachikamu chenguva. Kazhinji, ma lasers anogona kuburitsa mafungu anoenderera mberi (CW) kana masaisai anoputika, uye iwo ekupedzisira achinyanya kukosha mukushandisa kwakawanda senge kugadzira zvinhu, kunzwa kure, michina yekurapa, uye tsvakiridzo yesainzi. Kunzwisisa hunhu hwelaser pulse simba kwakakosha pakugadzirisa mashandiro ayo uye nekuvandudza kushanda kwekushandisa.
1. Tsanangudzo uye kuyerwa kwePulse Energy
Laser pulse energy isimba rinoburitswa nelaser pulse yega yega, inowanzoyerwa mumajoules (J). Kusiyana neinoenderera mberi wave (CW) lasers, pulsed lasers inoburitsa simba munguva pfupi, uye ukuru hwesimba hunowanzo hukama nekufamba kwenguva (pulse width) uye peak simba.
Simba rekupuruzira rinogona kuverengerwa uchishandisa fomula inotevera: E = Ppeak × τ. Apo E ndiyo pulse energy (joules), Ppeak ndiro simba guru rekuputika (watts), uye τ ndiyo nguva yekuputika (masekondi). Izvi zvinoreva kuti pulse simba rinoenderana zvakananga kune ese ari maviri epamusoro simba uye pulse upamhi.
2. Zvinhu Zvinokanganisa Pulse Energy
Zvinhu zvinoverengeka zvinopesvedzera pulse simba re laser, kusanganisira:
①Laser Dhizaini uye Type:
Mhando dzakasiyana dze lasers dzinokanganisa saizi ye pulse simba. Semuenzaniso, solid-state lasers inowanzopa yakakwira pulse simba, inokodzera maapplication anoda yakakwira simba kubuda. Fiber lasers, kune rumwe rutivi, inogona kuburitsa pulses nesimba rakakwirira nekugadzirisa iwo wavelength.
②Pulse Duration (Pulse Width):
Kupfupika kwehupamhi hwepuruzi, ndiko kukwira kwesimba repamusoro munguva yakatarwa, izvo zvinobvumira simba repamusoro rekupuruzira. Pulse widths in pulsed lasers inowanzo chinjika pakati pe nanoseconds uye picoseconds, nemapurusi mapfupi ari kushandiswa zvakanyanya mukushandiswa kwepamusoro-soro nekuda kwesimba rawo repamusoro.
③Laser Simba uye Simba Shanduko Kubudirira:
Kushanda kwelaser kunogadzirisa zvakananga kubuda kwesimba. Mamwe maLaser masisitimu anogona kukwidziridza shanduko nekugonesa dhizaini yepakati kana laser cavity, nekudaro ichiwedzera pulse simba.
④Laser Amplifiers:
Mune akawanda epamusoro-simba laser masisitimu, amplifiers anoshandiswa kuwedzera simba rekubuda. Kuburikidza neakawanda-nhanho amplification, iyo pulse simba inogona kukwidziridzwa zvakanyanya.
⑤Laser Drive Current:
Iyo dhiraivha yazvino yelaser diode kana laser system chinhu chakakosha chiri kupesvedzera simba rayo rekubuda uye pulse simba. Nekugadzirisa ikozvino, iyo laser's excitation state inogona kugadziridzwa, nokudaro ichikanganisa pulse simba kubuda.
3. Zvikumbiro zveLaser Pulse Energy
Saizi yelaser pulse energy inosarudza kukodzera kwayo kuminda dzakasiyana. Mamwe maapplication akajairika anosanganisira:
①Material Processing:
Mune laser welding, kucheka, uye kunyora, pulse simba rinogona kudzorwa chaizvo kuti ribudirire uye nepamusoro-chaizvo kugadzirisa. Yepamusoro pulse simba inokodzera kugadzira simbi zvinhu, nepo yakaderera-energy pulses inoshandiswa pakurapa kwakanaka kwepamusoro.
②Zvikumbiro zvekurapa:
Pulsed lasers inoshandiswa zvakanyanya mumunda wekurapa, kunyanya kuvhiyiwa kwelaser, kurapwa kweganda, uye kurapwa kwemaziso. Semuyenzaniso, pulsed lasers ane simba rakakwirira anogona kutarisa laser simba rechaiwo wavelengths munzvimbo diki dzekubvisa matishu ane chirwere kana kurapa mamiriro emeso.
③LiDAR uye Remote Sensing:
LiDAR tekinoroji inotsamira pane yakakwira pulse simba lasers kuti ive chaiyo kureba uye kufungidzira. Mukutarisa kwezvakatipoteredza, kutyaira kwakazvimirira, uye drone kuongorora, iyo pulse simba saizi inobata zvakananga kureba kwekuona uye kugadziriswa kweLiDAR system.
④Tsvagiridzo yeSainzi:
Pulsed lasers inoitawo basa rakakosha mukuyedza mufizikisi, chemistry, uye biology. Nekunyatso kudzora pulse simba, masayendisiti anogona kuitisa yakakwira-chaiyo laser-induced spectroscopy, particle kukwidziridza, uye laser kutonhora kutsvagisa.
4. Nzira dzekuwedzera Pulse Energy
Nzira dzakajairika dzekuwedzera laser pulse simba dzinosanganisira:
①Wana Kugonesa Kwepakati:
Nekusarudza yakakodzera kuwana yepakati uye nekugadzirisa dhizaini ye laser cavity, iyo inobuda simba re laser inogona kuwedzerwa.
②Multi-stage Laser Amplification:
Multi-stage amplifiers inogona kuwedzera zvishoma nezvishoma iyo pulse simba re laser kusangana nezvinodiwa zveakasiyana maapplication.
③Kuwedzera Dhivha Yazvino kana Pulse Width:
Kugadzirisa iyo laser's drive ikozvino kana pulse hupamhi inogona kukonzera yakakura pulse simba.
④Pulse Compression Technology:
Uchishandisa pulse compression matekiniki, nguva yekupuruzira inogona kupfupikiswa, ichiwedzera simba rayo repamusoro uye kuburitsa simba rakawanda munguva pfupi.
5. Mhedziso
Laser pulse simba ndiyo yakakosha parameter inokanganisa zvakananga kuita uye kushandiswa kwema lasers munzvimbo dzakasiyana siyana. Nekuenderera mberi kufambira mberi muhunyanzvi hwelaser, pulsed lasers ichave neyakakura kunyorera mumaindasitiri mazhinji. Kubva pakunyatsogadzira machining kusvika kure kure nekunzwa uye marapirwo ekurapa, iyo yakakwira simba rekubuda kwepulsed lasers inovhura mikana mitsva. Kunzwisisa iwo ekutanga pfungwa dze pulse simba uye ayo anofurira zvinhu zvinogona kubatsira kuita dzimwe sarudzo dzesainzi pakugadzira nekushandisa laser masisitimu.
Nguva yekutumira: Feb-11-2025