Kuwongolera pafupipafupi kwa ukadaulo wa laser pulse control

Kuwongolera pafupipafupi kwa pulselaser pulse control technology

1. Lingaliro la Pulse frequency, laser pulse Rate (Pulse Repetition Rate) imatanthawuza kuchuluka kwa ma pulse laser omwe amatulutsidwa pa nthawi ya unit, kawirikawiri ku Hertz (Hz). Ma pulse apamwamba kwambiri ndi oyenera kubwereza kubwereza, pomwe ma pulse otsika amakhala oyenera kugwira ntchito zamphamvu zamphamvu imodzi.

2. Ubale pakati pa mphamvu, kugunda m'lifupi ndi pafupipafupi Pamaso pa kuwongolera pafupipafupi kwa laser, ubale wapakati pa mphamvu, kugunda m'lifupi ndi pafupipafupi ziyenera kufotokozedwa kaye. Pali kuyanjana kovutirapo pakati pa mphamvu ya laser, ma frequency ndi kugunda m'lifupi, ndikusintha chimodzi mwamagawo nthawi zambiri kumafuna kuganizira magawo awiri ena kuti mukwaniritse ntchitoyo.

3. Njira zowongolera pafupipafupi kugunda kwamtima

a. Kunja kuwongolera mawonekedwe amanyamula chizindikiro pafupipafupi kunja kwa magetsi, ndikusintha ma frequency a laser pulse powongolera ma frequency ndi ntchito ya chizindikiro chotsitsa. Izi zimathandiza kuti kugunda kwamphamvu kugwirizane ndi chizindikiro cha katundu, ndikupangitsa kuti ikhale yoyenera kwa mapulogalamu omwe amafunikira kuwongolera bwino.

b. Mawonekedwe owongolera amkati Chizindikiro chowongolera pafupipafupi chimamangidwa mumagetsi oyendetsa, popanda kuyika kwazizindikiro zakunja. Ogwiritsa ntchito amatha kusankha pakati pa ma frequency okhazikika kapena ma frequency owongolera mkati kuti athe kusinthasintha.

c. Kusintha kutalika kwa resonator kapenaelectro-optical moduleMakhalidwe afupipafupi a laser amatha kusinthidwa mwa kusintha kutalika kwa resonator kapena kugwiritsa ntchito electro-optical modulator. Njira iyi yoyendetsera ma frequency apamwamba imagwiritsidwa ntchito nthawi zambiri pamapulogalamu omwe amafunikira mphamvu zapakati komanso zazifupi zazifupi, monga laser micromachining ndi kujambula kwachipatala.

d. Acousto Optical Modulator(AOM Modulator) ndi chida chofunikira chowongolera pafupipafupi kugunda kwaukadaulo wa laser pulse control.AOM Modulatorimagwiritsa ntchito ma acousto optic effect (ndiko kuti, kuthamanga kwa makina oscillation kwa mafunde amphamvu kumasintha refractive index) kuti isinthe ndikuwongolera mtengo wa laser.

4. Tekinoloje ya intracavity modulation, poyerekeza ndi kusinthasintha kwakunja, kusinthika kwa intracavity kumatha kupanga bwino mphamvu zambiri, mphamvu yayikulu.laser pulse. Zotsatirazi ndi njira zinayi zodziwika bwino za intracavity modulation:

a. Kupindula Kusinthana mofulumira modulating gwero mpope, kupeza sing'anga tinthu nambala inversion ndi kupeza coefficient mofulumira anakhazikitsa, kuposa analimbikitsa mlingo wa poizoniyu, chifukwa chakuthwa kuwonjezeka photon mu patsekeke ndi m'badwo wa yochepa zimachitika laser. Njirayi ndiyofala kwambiri mu ma lasers a semiconductor, omwe amatha kupanga ma pulses kuchokera ku nanoseconds mpaka makumi a picoseconds, ndi kubwereza kwa ma gigahertz angapo, ndipo amagwiritsidwa ntchito kwambiri polumikizana ndi optical ndi mitengo yayikulu yotumizira deta.

Q switch (Q-switching) Q masiwichi amapondereza mayankho owoneka bwino poyambitsa kutayika kwakukulu muzitsulo za laser, kulola kuti kupopera kupangitse kusinthika kwa tinthu kupitirira malire, ndikusunga mphamvu zambiri. Pambuyo pake, kutayika kwa patsekeke kumachepetsedwa mofulumira (ndiko kuti, mtengo wa Q wa patsekeke ukuwonjezeka), ndipo ndemanga ya kuwala imayatsidwanso, kotero kuti mphamvu yosungidwa imatulutsidwa mu mawonekedwe a ultra-short high-intensity pulses.

c. Mode Locking imapanga ma pulse amfupi-afupi kwambiri a picosecond kapena femtosecond level powongolera ubale wagawo pakati pamitundu yotalikirapo mumtundu wa laser. Tekinoloje yotseka mode imagawidwa kukhala yotsekera mopanda phokoso komanso yotsekera yogwira.

d. Cavity Dumping Posunga mphamvu mu ma photons mu resonator, pogwiritsa ntchito galasi lotayirira pang'ono kuti amange bwino ma photon, kusunga kutayika kochepa muzitsulo kwa nthawi. Pambuyo paulendo umodzi wozungulira, kugunda kwamphamvu "kumatayidwa" kunja kwa mtsempha mwa kusintha mofulumira gawo lamkati lamkati, monga acousto-optic modulator kapena electro-optic shutter, ndi laser pulse yochepa imatulutsidwa. Poyerekeza ndi kusintha kwa Q, kutulutsa mpweya kumatha kukhala ndi kuchuluka kwa ma nanoseconds angapo pamlingo wobwerezabwereza (monga ma megahertz angapo) ndikuloleza mphamvu zakugunda kwamphamvu, makamaka pamapulogalamu omwe amafunikira kubwereza kwapamwamba komanso kugunda kwapafupi. Kuphatikizidwa ndi njira zina zopangira ma pulse, mphamvu ya pulse imatha kupititsidwa patsogolo.

Kuwongolera kwa pulselaserndi njira yovuta komanso yofunikira, yomwe imaphatikizapo kuwongolera kugunda kwa mtima, kuwongolera pafupipafupi komanso njira zambiri zosinthira. Kupyolera mu kusankha koyenera ndi kugwiritsa ntchito njirazi, ntchito ya laser ikhoza kusinthidwa molondola kuti ikwaniritse zosowa za zochitika zosiyanasiyana zogwiritsira ntchito. M'tsogolomu, ndi kutuluka kosalekeza kwa zida zatsopano ndi matekinoloje atsopano, ukadaulo wowongolera kugunda kwa ma lasers udzabweretsa zopambana zambiri, ndikulimbikitsa chitukuko chalaser lusom'njira yolondola kwambiri komanso kugwiritsa ntchito mokulirapo.