Ulawulo lobubanzi bepulseulawulo lwe-laser pulseubuchwepheshe
Ulawulo lwe-pulse lwe-laser yenye yezona zinto zibalulekileyoiteknoloji yelaser, nto leyo echaphazela ngokuthe ngqo ukusebenza kunye nefuthe lokusetyenziswa kwelaser. Eli phepha liza kucwangcisa ngokucwangcisiweyo ulawulo lobubanzi bepulse, ulawulo lwefrikhwensi yepulse kunye netekhnoloji yokuguqula enxulumene nayo, kwaye lizame ukuba nobungcali, obupheleleyo kunye nobukrelekrele.
1. Ingcamango yobubanzi be-pulse
Ububanzi bePulse yelaser bubhekisa kubude bepulse yelaser, eyiparameter ebalulekileyo yokuchaza iimpawu zexesha lemveliso yelaser. Kwilaser zepulse ezimfutshane kakhulu (ezifana ne-nanosecond, i-picosecond kunye ne-femtosecond lasers), okukhona ububanzi bepulse bufutshane, kokukhona amandla aphezulu encochoyini, kwaye kokukhona isiphumo sobushushu sincinci, esifanelekileyo kwi-machining echanekileyo okanye uphando lwesayensi.
2. Izinto ezichaphazela ububanzi be-laser pulse Ububanzi be-pulse ye-laser buchaphazeleka zizinto ezahlukeneyo, ikakhulu eziquka ezi zinto zilandelayo:
a. Iimpawu ze-gain medium. Iindidi ezahlukeneyo ze-gain media zinesakhiwo samandla esahlukileyo kunye nobomi be-fluorescence, nto leyo echaphazela ngokuthe ngqo ukuveliswa kunye nobubanzi be-pulse ye-laser pulse. Umzekelo, ii-laser ze-solid-state, iikristale ze-Nd:YAG kunye neekristale ze-Ti:Sapphire ziqhelekileyo ze-solid-state laser media. Ii-laser zegesi, ezifana nee-laser ze-carbon dioxide (CO₂) kunye nee-laser ze-helium-neon (HeNe), zihlala zivelisa ii-pulses ezinde ngenxa yesakhiwo sazo se-molecular kunye neempawu ze-excited state; Ii-laser ze-Semiconductor, ngokulawula ixesha le-carrier recombination, zinokufikelela kububanzi be-pulse ukusuka kwi-nanoseconds ukuya kwi-picoseconds.
Uyilo lwe-laser cavity lunempembelelo enkulu kububanzi be-pulse, kuquka: ubude be-cavity, ubude be-laser cavity bumisela ixesha elifunekayo ukuze ukukhanya kuhambe kwakhona kwi-cavity, i-cavity ende iya kukhokelela kububanzi be-pulse obude, ngelixa i-cavity emfutshane inceda ekudalweni kwee-pulse ezimfutshane kakhulu; Ukubonakalisa: I-reflector ene-reflection ephezulu inokunyusa uxinano lwe-photon kwi-cavity, ngaloo ndlela iphucula isiphumo se-gain, kodwa ukubonakalisa okuphezulu kakhulu kunokunyusa ilahleko kwi-cavity kwaye kuchaphazele uzinzo lobubanzi be-pulse; Indawo ye-gain medium kunye nendawo ye-gain medium kwi-cavity nazo ziya kuchaphazela ixesha lokusebenzisana phakathi kwe-photon kunye ne-gain medium, kwaye emva koko zichaphazele ububanzi be-pulse.
c. Iteknoloji yokutshintsha i-Q kunye neteknoloji yokuvala imowudi ziindlela ezimbini ezibalulekileyo zokufezekisa imveliso ye-pulse laser kunye nolawulo lobubanzi be-pulse.
d. Umthombo wepompo kunye nemo yepompo Uzinzo lwamandla omthombo wepompo kunye nokukhethwa kwemo yepompo nako kunempembelelo ebalulekileyo kububanzi bepulse.
3. Iindlela zokulawula ububanzi be-pulse eziqhelekileyo
a. Tshintsha indlela yokusebenza yelaser: indlela yokusebenza yelaser iya kuchaphazela ngokuthe ngqo ububanzi bepulse yayo. Ububanzi bepulse bungalawulwa ngokulungelelanisa ezi parameter zilandelayo: i-frequency kunye nobunzulu bomthombo wepompo, igalelo lamandla lomthombo wepompo, kunye neqondo lokuguqulwa kwenani leenxalenye kwi-gain medium; Ukubonakaliswa kwelensi yokukhupha kutshintsha ukusebenza kwempendulo kwi-resonator, ngaloo ndlela kuchaphazela inkqubo yokwakheka kwepulse.
b. Lawula imilo yepulse: lungisa ngokungathanga ngqo ububanzi bepulse ngokutshintsha imilo yepulse yelaser.
c. Ukuguqulwa kwamandla: Ngokutshintsha amandla ombane aphumayo ukulawula ukusasazwa kwamanqanaba amandla e-elektroniki kwi-laser medium, uze utshintshe ububanzi be-pulse. Le ndlela inesantya sokuphendula ngokukhawuleza kwaye ifanelekile kwiimeko zokusetyenziswa ezifuna ukulungiswa ngokukhawuleza.
d. Ukutshintsha imodulation: ngokulawula imeko yokutshintsha kwelaser ukuze ulungise ububanzi bepulse.
e. Ulawulo lobushushu: utshintsho lobushushu luya kuchaphazela ulwakhiwo lwamandla e-electron kwi-laser, ngaloo ndlela luchaphazela ngokungathanga ngqo ububanzi be-pulse.
f. Sebenzisa iteknoloji yokuguqula: Iteknoloji yokuguqula yindlela esebenzayo yokulawula ngokuchanekileyo ububanzi be-pulse.
Ukuguqulwa kwelaserIteknoloji yiteknoloji esebenzisa i-laser njengomthwali kwaye ifake ulwazi kuyo. Ngokwendlela edibene ngayo ne-laser, ingahlulwa ibe yi-internal modulation kunye ne-external modulation. I-Internal modulation ibhekisa kwi-modulation mode apho i-modulated signal ilayishwa khona kwinkqubo ye-laser oscillation ukutshintsha ii-laser oscillation parameters ngaloo ndlela itshintshe iimpawu ze-laser output. I-External modulation ibhekisa kwi-modulation mode apho i-modulation signal yongezwa khona emva kokuba i-laser yenziwe, kwaye ii-output laser properties zitshintshwa ngaphandle kokutshintsha ii-oscillation parameters ze-laser.
Itekhnoloji yokuguqula imodulation inokwahlulwa ngokweefom zokuguqula umbane, kubandakanya i-analog modulation, i-pulse modulation, i-digital modulation (i-pulse code modulation); Ngokweeparamitha zokuguqula, yahlulwe ngokwe-intensity modulation kunye ne-phase modulation.
Imodyuli yokuqina: Ububanzi be-pulse bulawulwa ngokulungelelanisa utshintsho lobukhali bokukhanya kwe-laser.
Imodyuli yesigabaUbubanzi be-pulse bulungiswa ngokutshintsha isigaba se-light wave.
I-amplifier evalekileyo ngesigaba: Ngokusebenzisa i-amplifier evalekileyo ngesigaba, ububanzi be-laser pulse bunokulungiswa ngokuchanekileyo.
Ixesha leposi: Matshi-24-2025