Pulse Energy ya Laser

Mphamvu ya pulse ya laser imatanthawuza mphamvu yomwe imafalitsidwa ndi laser pulse pa unit of time. Nthawi zambiri, ma lasers amatha kutulutsa mafunde osalekeza (CW) kapena mafunde othamanga, ndipo omaliza amakhala ofunikira kwambiri pazinthu zambiri monga kukonza zinthu, kuzindikira kutali, zida zamankhwala, ndi kafukufuku wasayansi. Kumvetsetsa mawonekedwe a laser pulse energy ndikofunikira kuti muwongolere magwiridwe antchito ake ndikuwongolera magwiridwe antchito.

1. Tanthauzo ndi Kuyeza kwa Mphamvu ya Pulse

Laser pulse energy ndi mphamvu yomwe imatulutsidwa ndi laser pulse iliyonse, yomwe nthawi zambiri imayesedwa mu ma joules (J). Mosiyana ndi ma laser continuous wave (CW) lasers, ma pulsed lasers amatulutsa mphamvu pakanthawi kochepa, ndipo kukula kwa mphamvu kumayenderana ndi kutalika kwa kugunda kwa mtima (m'lifupi mwake) ndi mphamvu yayikulu.

Mphamvu yakugunda imatha kuwerengedwa pogwiritsa ntchito njira iyi: E = Ppeak × τ. Kumene E ndi mphamvu ya pulse (joules), Ppeak ndi mphamvu yapamwamba ya phokoso (watts), ndipo τ ndi nthawi yothamanga (masekondi). Izi zikutanthauza kuti mphamvu ya pulse imagwirizana mwachindunji ndi mphamvu zam'mwamba komanso m'lifupi mwake.

2. Zomwe Zimakhudza Mphamvu ya Pulse

Zinthu zingapo zimakhudza kugunda kwamphamvu kwa laser, kuphatikiza:

①Laser Design ndi Mtundu:
Mitundu yosiyanasiyana ya lasers imakhudza kukula kwa mphamvu ya pulse. Mwachitsanzo, ma lasers a solid-state nthawi zambiri amapereka mphamvu zothamanga kwambiri, zoyenera kugwiritsa ntchito zomwe zimafuna mphamvu zambiri. Komano, ma fiber lasers amatha kupanga ma pulse ndi mphamvu yayikulu posintha kutalika kwawo.

②Kutalika kwa Kugunda (Pulse Width):
Kufupikitsa kwa pulse m'lifupi, kumapangitsa mphamvu yapamwamba kwambiri mu nthawi yoperekedwa, yomwe imalola mphamvu yowonjezereka ya kugunda. Kutalika kwa ma pulse mu ma pulsed lasers nthawi zambiri kumasintha pakati pa nanoseconds ndi picoseconds, ndi ma pulse afupiafupi omwe amagwiritsidwa ntchito kwambiri pamapulogalamu olondola kwambiri chifukwa cha mphamvu zawo zapamwamba.

③Laser Power and Energy Conversion Mwachangu:
Kuchita bwino kwa laser kumatsimikizira mwachindunji kutulutsa mphamvu. Makina ena a laser amatha kupititsa patsogolo kutembenuka mwa kukhathamiritsa mapangidwe a sing'anga kapena laser patsekeke, potero akuwonjezera mphamvu yakugunda.

④Zida za Laser Amplifiers:
M'makina ambiri amphamvu kwambiri a laser, amplifiers amagwiritsidwa ntchito kuonjezera mphamvu zotulutsa. Kupyolera mu kukulitsa masitepe ambiri, mphamvu ya pulse imatha kulimbikitsidwa kwambiri.

⑤Laser Drive Current:
Magalimoto apano a laser diode kapena laser system ndiye chinthu chofunikira kwambiri chomwe chimakhudza mphamvu zake zotulutsa ndi mphamvu yakugunda. Mwa kusintha pakali pano, dziko lachisangalalo la laser likhoza kusinthidwa, motero zimakhudza mphamvu ya pulse.

3. Ntchito za Laser Pulse Energy

Kukula kwa mphamvu ya laser pulse kumatsimikizira kuyenerera kwake kumadera osiyanasiyana. Zina mwazomwe zimagwiritsidwa ntchito ndi izi:

①Kukonza Zinthu:
Mu kuwotcherera kwa laser, kudula, ndi kujambula, mphamvu ya pulse imatha kuyendetsedwa bwino kuti ikwaniritse kukonza bwino komanso kulondola kwambiri. Mphamvu zothamanga kwambiri ndizoyenera kukonza zida zachitsulo, pomwe ma pulse opanda mphamvu amagwiritsidwa ntchito pochiritsa bwino pamtunda.

②Mapulogalamu azachipatala:
Ma lasers a pulsed amagwiritsidwa ntchito kwambiri m'zachipatala, makamaka pochita maopaleshoni a laser, kuchiza khungu, komanso chithandizo chamaso. Mwachitsanzo, ma pulsed lasers okhala ndi mphamvu zambiri amatha kuyang'ana mphamvu ya laser ya mafunde ang'onoang'ono kumadera ang'onoang'ono kuti awononge minofu yodwala kapena kuchiza matenda a maso.

③LiDAR ndi Zomverera Zakutali:
Ukadaulo wa LiDAR umadalira ma lasers amphamvu kwambiri kuti azitha kusiyanasiyana komanso kuyerekeza. Poyang'anira chilengedwe, kuyendetsa galimoto, ndi kuyang'anitsitsa kwa drone, kukula kwa mphamvu ya pulse kumakhudza mwachindunji mtunda wodziwika ndi kuthetsa kwa dongosolo la LiDAR.

④Kafukufuku wa Sayansi:
Ma lasers a pulsed amakhalanso ndi gawo lofunikira pakuyesa physics, chemistry, ndi biology. Mwa kuwongolera bwino mphamvu ya kugunda kwamphamvu, asayansi amatha kuchita zinthu zowoneka bwino kwambiri za laser-induced spectroscopy, kuthamanga kwa tinthu, ndi kafukufuku wozizira wa laser.

4. Njira Zowonjezera Mphamvu Zakugunda

Njira zodziwika zowonjezerera mphamvu ya laser pulse ndizo:

①Pezani Kukhathamiritsa Kwapakatikati:
Posankha njira yoyenera yopezera ndi kukhathamiritsa kapangidwe ka laser patsekeke, mphamvu linanena bungwe laser akhoza ziwonjezeke.

②Multi-stage Laser Amplification:
Mipikisano siteji amplifiers akhoza pang'onopang'ono kuwonjezera kugunda mphamvu ya laser kukwaniritsa zofunika zosiyanasiyana ntchito.

③Kuchulukitsa Kukula kwa Magalimoto Apano kapena Kugunda:
Kusintha mphamvu ya laser pakali pano kapena kugunda kwamtima kumatha kubweretsa mphamvu yokulirapo.

④Pulse Compression Technology:
Pogwiritsa ntchito njira zoponderezedwa ndi kugunda kwa mtima, nthawi ya kugunda imatha kufupikitsidwa, kukulitsa mphamvu yake yapamwamba ndikutulutsa mphamvu zambiri munthawi yochepa.

5. Mapeto

Laser pulse mphamvu ndi gawo lofunikira lomwe limakhudza mwachindunji magwiridwe antchito ndi kugwiritsa ntchito ma lasers m'magawo osiyanasiyana. Ndi kupita patsogolo kosalekeza kwaukadaulo wa laser, ma pulsed lasers adzakhala ndi ntchito zambiri m'mafakitale ambiri. Kuchokera pamakina olondola mpaka kuzindikira zakutali ndi chithandizo chamankhwala, kutulutsa mphamvu kwamphamvu kwa ma pulsed lasers kumatsegula mwayi watsopano. Kumvetsetsa mfundo zazikuluzikulu za mphamvu ya pulse ndi mphamvu zake kungathandize kupanga zisankho zambiri zasayansi popanga ndi kugwiritsa ntchito makina a laser.