Nekukurumidza kufambira mberi kweiyo optoelectronic tekinoroji, semiconductor lasers ave kushandiswa zvakanyanya mundima dzakasiyana siyana seyekufonerana, mushonga, kugadzirwa kwemaindasitiri, uye LiDAR, nekuda kwekuita kwavo kwakanyanya, compact size, uye nyore kuchinjika. Pakati peiyo tekinoroji pane iyo yepakati, iyo inoita basa rakakosha. Inoshanda se“simba tsime”iyo inogonesa kukurudzirwa emission uye laser chizvarwa, kusarudza iyo laser's kuita, wavelength, uye kugona kushandisa.
1. Chii chinonzi Gain Medium?
Sezvinoratidzwa nezita racho, svikiro rekuwana chinhu chinopa optical amplification. Kana ichinakidzwa nekunze kwesimba masosi (senge jekiseni remagetsi kana kupomba kwemaziso), inokudza mwenje wechiitiko kuburikidza nemuchina wekukurudzira kubuda, zvichitungamira mukubuda kwelaser.
Mune semiconductor lasers, iyo yepakati yepakati inowanzo umbwa yedunhu rinoshanda paPN junction, ine kuumbwa kwezvinhu, chimiro, uye nzira dzedoping dzinokanganisa zvakananga maparamita akakosha senge pachikumbaridzo chazvino, emission wavelength, kunyatsoita, uye hunhu hwekupisa.
2. Common Gain Materials mu Semiconductor Lasers
III-V komputa semiconductors ndiyo inonyanya kushandiswa kuwana zvinhu. Mienzaniso yakajairika inosanganisira:
①GaAs (Gallium Arsenide)
Inokodzera lasers emitting mu850-980 nm renji, rinoshandiswa zvakanyanya mukuonana kutaurirana uye laser kudhinda.
②InP (Indidium Phosphide)
Inoshandiswa kuburitsa mu1.3 µm uye 1.55 µm mabhendi, yakakosha kune fiber-optic kutaurirana.
③InGaAsP / AlGaAs / InGaN
Maumbirwo avo anogona kugadziridzwa kuti awane akasiyana wavelengths, achigadzira hwaro hwetunable-wavelength laser dhizaini.
Izvi zvinhu zvinowanzo ratidza yakananga bhendi zvimiro, zvichiita kuti zvinyatso shanda pa electron-gomba recombination ine photon emission, yakanakira kushandiswa mu semiconductor laser kuwana yepakati.
3. Evolution of Gain Structures
Sezvo matekinoroji ekugadzira achifambira mberi, kuwana zvimiro mumasemiconductor lasers akashanduka kubva pakutanga homojunctions kuenda kune heterojunctions, uye nekuwedzera kune yepamusoro quantum zvakanaka uye quantum dot masisitimu.
①Heterojunction Gain Medium
Nekubatanidza semiconductor zvinhu nemabhandi akasiyana-siyana, vatakuri uye mafotoni anogona kunyatsovharirwa munzvimbo dzakatarwa, kuwedzera kubudirira kwekuwana uye kuderedza chikumbaridzo chazvino.
②Quantum Zvakanaka Zvimiro
Nekudzikisa ukobvu hwedunhu rinoshanda kusvika pachikero che nanometer, maerekitironi anovharirwa mumativi maviri, zvichiwedzera kuwedzera kweradiative recombination performance. Izvi zvinoguma nemalaser ane yakaderera chikumbaridzo mafungu uye nani kupisa kugadzikana.
③Quantum Dot Zvimiro
Uchishandisa maitiro ekuzvibatanidza, zero-dimensional nanostructures inoumbwa, ichipa yakapinza simba rekugovera kugovera. Izvi zvimiro zvinopa yakakwidziridzwa kuwana maitiro uye wavelength kugadzikana, zvichiita kuti ive nzvimbo yekutsvagisa yechizvarwa chinotevera chepamusoro-inoshanda semiconductor lasers.
4. Iyo Gain Medium Inotemedzei?
①Emission Wavelength
Iyo bandgap yezvinhu inosarudza laser's wavelength. Semuenzaniso, InGaAs yakakodzera kune ari pedyo-infrared lasers, nepo InGaN inoshandiswa kune yebhuruu kana violet lasers.
②Kubudirira & Simba
Mutakuri wekufamba uye asiri-radiative recombination rates anokanganisa optical-to-electrical conversion performance.
③Thermal Performance
Zvinhu zvakasiyana zvinopindura kushanduka kwekushisa nenzira dzakasiyana-siyana, zvichikonzera kuvimbika kwelaser munzvimbo dzeindasitiri nemauto.
④Modulation Response
The gain medium inokanganisa laser's kumhanya kwekupindura, iyo yakakosha mu-high-speed communication applications.
5. Mhedziso
Mune yakaomesesa chimiro chesemiconductor lasers, iyo yepakati yepakati ndeyechokwadi "moyo" wayo.-kwete chete basa rekugadzira iyo laser asiwo nekupesvedzera hupenyu hwayo, kugadzikana, uye mamiriro ekushandisa. Kubva pakusarudzwa kwezvinhu kuenda kudhizaini yezvimiro, kubva kuita macroscopic kusvika kune microscopic michina, budiriro yega yega mukuwana yepakati iri kutyaira laser tekinoroji kuenda kune yakakura kuita, yakafararira maapplication, uye nekuongorora kwakadzama.
Nekufambira mberi kuri kuenderera mberi mune zvesainzi sainzi uye nano-fabrication tekinoroji, ramangwana rekuwana repakati rinotarisirwa kuunza kupenya kwepamusoro, kuvharika kwewavelength, uye smarter laser mhinduro.-kuvhura mikana yakawanda yesainzi, indasitiri, uye nzanga.
Nguva yekutumira: Jul-17-2025