Ububanzi be-Pulse bubhekisa kubude bexesha lokubetha kwentliziyo, kwaye uluhlu ngokwesiqhelo lusuka kwiinanoseconds (ns, 10).-9imizuzwana) ukuya kwi-femtoseconds (fs, 10-15imizuzwana). Iilaser ezityhuliweyo ezinobubanzi obuhlukeneyo bokubetha zifanelekile kwizicelo ezahlukeneyo:
-Ububanzi bePulse emfutshane (Picosecond/Femtosecond):
Ilungele ukuchaneka komatshini wezinto ezibuthathaka (umzekelo, iglasi, isafire) ukunciphisa iintanda.
- Ububanzi bePulse ende (i-Nanosecond): Ifanelekile ukusika isinyithi, i-welding, kunye nezinye izicelo apho iziphumo ze-thermal zifunekayo.
- I-Laser ye-Femtosecond: Isetyenziselwa utyando lwamehlo (njenge-LASIK) kuba inokwenza ukusika okuchanekileyo kunye nomonakalo omncinci kwizicubu ezijikelezileyo.
-Ii-Ultrashort Pulses: Isetyenziselwa ukufunda iinkqubo eziguquguqukayo ze-ultrafast, ezifana ne-molecular vibrations kunye neekhemikhali.
Ububanzi be-pulse buchaphazela ukusebenza kwelaser, njengamandla aphezulu (Pincopho= amandla e-pulse/pulse wide. Ubude obufutshane be-pulse ububanzi, ukuphakama kwamandla aphezulu kumandla afanayo we-pulse enye.) Kwakhona kuchaphazela imiphumo ye-thermal: ubude be-pulse ende, njenge-nanoseconds, inokubangela ukuqokelela kwe-thermal kwizinto eziphathekayo, ezikhokelela ekunyibilikeni okanye umonakalo wokushisa; Ububanzi bepulse emfutshane, njenge picoseconds okanye femtoseconds, yenza "ulungiso olubandayo" kunye neendawo ezincitshisiweyo ezichatshazelwe bubushushu.
IiFiber lasers zilawula kwaye zilungelelanise ububanzi be-pulse zisebenzisa ezi ndlela zilandelayo:
1. Q-Switching: Ivelisa i-nanosecond pulses ngokutshintsha ngezikhathi ezithile iilahleko ze-resonator ukuvelisa i-pulses ephezulu yamandla.
2. Indlela yokutshixa: Ivelisa i-picosecond okanye i-femtosecond ultrashort pulses ngokulungelelanisa iindlela zelongitudinal ngaphakathi kweresonator.
3. I-Modulators okanye i-Nonlinear Effects: Umzekelo, usebenzisa i-Nonlinear Polarization Rotation (NPR) kwiifibers okanye i-absorber saturable ukucinezela ububanzi be-pulse.
Ixesha lokuposa: May-08-2025