Ụkpụrụ ọrụ nke laser semiconductor

Ụkpụrụ ọrụ nkelaser semiconductor

Nke mbụ, a na-ewebata ihe achọrọ maka paramita maka laser semiconductor, ọkachasị gụnyere akụkụ ndị a:
1. Arụmọrụ fotoelectric: gụnyere oke mbibi, dynamic linewidth na paramita ndị ọzọ, paramita ndị a na-emetụta arụmọrụ nke semiconductor lasers na sistemụ nkwukọrịta.
2. Paramita nhazi: dịka nha na nhazi na-egbuke egbuke, nkọwa njedebe nke mwepụta, nha nrụnye na nha nhazi.
3. Ogologo Wave: Oke wavelength nke semiconductor laser bụ 650~1650nm, izi ezi ya dịkwa elu.
4. Ọwa mmiri (Ith) na ọwa mmiri (lop): Paramita ndị a na-ekpebi ọnọdụ mmalite na ọnọdụ ọrụ nke laser semiconductor.
5. Ike na voltaji: Site n'ịtụ ike, voltaji na ọkụ eletrik nke laser semiconductor n'ọrụ, enwere ike ịdọta usoro PV, PI na IV iji ghọta njirimara ọrụ ha.

Ụkpụrụ ọrụ
1. Ọnọdụ Mmụba: Nkesa inversion nke ndị na-ebu chaja na mpaghara lasing (mpaghara na-arụ ọrụ) ka edobere. Na semiconductor, a na-anọchite anya ike nke elektrọn site na usoro nke ọkwa ike na-aga n'ihu. Ya mere, ọnụọgụ elektrọn dị n'ala nke eriri conduction na steeti ike dị elu ga-abụrịrị nnukwu karịa ọnụọgụ oghere dị n'elu eriri valence na steeti ike dị ala n'etiti mpaghara eriri ike abụọ iji nweta ntụgharị nke nọmba mkpụrụ ahụ. A na-enweta nke a site n'itinye echiche dị mma na homojunction ma ọ bụ heterojunction na ịgbanye ndị na-ebu ihe dị mkpa n'ime oyi akwa na-arụ ọrụ iji kpalie elektrọn site na eriri valence ike dị ala gaa na eriri conduction ike dị elu. Mgbe ọnụọgụgụ elektrọn dị ukwuu na steeti ọnụọgụgụ mkpụrụ ndụ ihe nketa a tụgharịrị na-ejikọta na oghere, mwepụta mkpali na-eme.
2. Iji nweta radieshọn a na-akpali akpali n'ezie, a ga-enye radieshọn a na-akpali akpali ọtụtụ ugboro na resonator optical iji mepụta oscillation laser, a na-emepụta resonator nke laser site na elu eke nke kristal semiconductor dị ka enyo, nke a na-ejikarị ekpuchi na njedebe nke ìhè ahụ na ihe nkiri dielectric dị elu na-egosipụta, a na-ekpuchikwa elu dị nro ahụ na ihe nkiri ntụgharị uche dị ala. Maka oghere Fp (Fabry-Perot cavities) semiconductor laser, enwere ike ịrụ oghere FP ngwa ngwa site na iji oghere cleavage eke nke kwụ ọtọ na pn junction plane nke kristal ahụ.
(3) Iji mepụta oscillation kwụsiri ike, igwe laser ga-enwerịrị ike inye nnukwu uru zuru oke iji kwụọ ụgwọ maka mfu anya nke resonator kpatara na mfu nke ihe laser si n'elu oghere kpatara, ma na-eme ka ubi ọkụ dị n'ime oghere ahụ dịkwuo elu mgbe niile. Nke a ga-enwerịrị ntụtụ ọkụ siri ike, ya bụ, enwere mgbanwe ọnụọgụ mkpụrụ ndụ zuru oke, ka ogo ntụgharị ọnụọgụ mkpụrụ ndụ dị elu, ka uru ahụ na-abawanye, ya bụ, ihe achọrọ ga-emezu ọnọdụ oke ugbu a ụfọdụ. Mgbe laser rutere na njedebe, enwere ike ịkpọghachi ìhè nwere ogologo ebili mmiri kpọmkwem n'ime oghere ahụ ma mee ka ọ dịkwuo elu, ma mechaa mepụta laser na mmepụta na-aga n'ihu.

Ihe achọrọ maka arụmọrụ
1. Bandwit na ọnụego mgbanwe: laser semiconductor na teknụzụ mgbanwe ha dị oke mkpa na nkwukọrịta anya ikuku, bandwit mgbanwe na ọnụego na-emetụtakwa mma nkwukọrịta ozugbo. Laser edoziri n'ime (laser a gbanwere ozugbo) dabara adaba maka mpaghara dị iche iche na nkwukọrịta eriri optical n'ihi nnyefe ọsọ dị elu yana ọnụ ala ya.
2. Njirimara spectral na njirimara modulation: Laser nzaghachi nke semiconductor kesara (Laser DFB) aghọwo isi iyi ìhè dị mkpa na nkwukọrịta eriri optical na nkwukọrịta oghere optical n'ihi njirimara spectral ha dị mma na njirimara modulation.
3. Ọnụ ego na mmepụta oke: Laser semiconductor kwesịrị inwe uru nke obere ọnụ ahịa na mmepụta oke iji gboo mkpa nke mmepụta na ngwa buru ibu.
4. Ojiji ike na ntụkwasị obi: N'ọnọdụ ngwa dịka ebe data, laser semiconductor chọrọ obere oriri ike na ntụkwasị obi dị elu iji hụ na ọrụ kwụsiri ike ogologo oge.