Semiconductor Lasers: momo o pūrere, te parau tumu whakahaere, te whakamahi o

lasers Semiconductor He generators aronui hāngai Semiconductor reo kaha, hanga ai te amplification whatu i te tukunga whakaongaongatia te i te whakawhitinga i waenga i te taumata pūngao aronui i te kukū nui o kawe tiaki noa i roto i te rohe.

Semiconductor taiaho: parau tumu o te mahi

Tikanga, te nuinga o irahiko kei i runga i te taumata valency. I roto i rawa te ropu āputa pūngao, he Semiconductor huarahi pūngao pūaho, haere mai irahiko ki te āhua o te excitation, me whawhati te rohe tapuí, neke ki te rohe noa, te tutonu i tona mata raro. Wä, i hanga te kohao i roto i te taumata honohono, moata ai ki tona rohe runga. Ko te irahiko i roto i te rohe noa recombine ki rua, anaana pūngao rite ki te pūngao o te rohe whaturama, i roto i te puka o pūaho. Ka taea te whakarei tauhono e pūaho ki te taumata pūngao rawaka. hāngai whakaahuatanga tau ki te tohatoha mahi Fermi.

pūrere

Ko te pūrere Semiconductor taiaho ko te ngōhiko taiaho mäminga irahiko pūngao me rua i roto i te rohe p-n-whakawhiti - te mata o te whakapā ki te p- Semiconductor conductive me n-momo. I tua atu, i reira he lasers Semiconductor ki tāuru pūngao optical i i hanga e te kurupae e te absorption o pūaho o lasers Niniiraa marama, me te aronui, e hāngai ana ki te whakawhitinga i roto i nga rohe.

hanganga

pūhui angamaheni i whakamahia i roto i lasers Semiconductor me ētahi atu pūrere optoelectronic, e whai ake:

• gallium arsenide;
• gallium phosphide;
• gallium nitride;
• phosphide indium;
• arsenide gallium indium;
• gallium arsenide konumohe;
• gallium-indium-gallium nitride;
• phosphide, gallium-indium.

roangaru

Ēnei pūhui - Semiconductors hāngai-āputa. Indirect- (silicon) e kore e emit te marama ki te kaha rawaka me te kakama. Ko te roangaru o te radiation o te taiaho ngōhiko tei runga i te pūngao o te pūngao pūaho huarahi te āputa ropu o te pūhui ngā. kia tonu rerekē i runga i te whānuitanga whanui te 3- me 4-wae pūhui Semiconductor pūngao ropu āputa. I AlGaAs = Al _x Ga _1-x rite, hei tauira, te whakanui ake i te ihirangi konumohe (hua i roto i te x) e te pānga o hua i roto i te āputa pēne pūngao.

Ahakoa te mahi i te lasers Semiconductor tino noa i roto i te wahi pōkākā tata o te hihinga, emit etahi whero (gallium indium phosphide), puru ranei papura (gallium nitride) tae. Toharite taiaho pōkākā Semiconductor (selenide mata) me lasers Niniiraa aronui.

Semiconductors organic

Haunga te whakamahi ai i te pūhui pararopi i runga, me te organic. Ko te hangarau e tika ana ano i raro i te whanaketanga, engari fafau tona whanaketanga ki tino whakaiti i te utu o te hanga o lasers. Na tawhiti, anake whakawhanakehia lasers organic ki optical tāuru pūngao, me te tiketike-mahi hiko papu kore i ano i tae.

momo

Na roto i te plurality o lasers Semiconductor ki ngā tawhā rerekē, me te uara tono.

te p taiaho Iti hua he kurupae o-te kounga tiketike radiation aunoa tona mana awhe i te rau torutoru ki rima rau milliwatts. te kongakonga taiaho ngōhiko ko te paraharaha tapawhā kikokore, i te kaimahi rite te waveguide, mai te radiation iti ki te wāhi iti. doped Crystal ki ngā taha e rua ki te hanga i tētahi PN-whakawhitinga o te wāhi nui. Ko te pito oro hanga he resonator whatu o te Fabry - interferometer Perot. Pūaho haere i roto i te kōhao ki te ka whakanui i te tauhono radiation meinga, a ka tīmata i te whakatupuranga. E whakamahia ratou i roto i te taiaho atatohu, CD- me DVD-kaitākaro, me te muka whatu.

lasers mana iti me lasers mārō ki te kōhao waho mō te whakaputa ngātere poto kia tukutahi ngā.

lasers Semiconductor ki te kōhao waho uru o te ngōhiko taiaho, e whai wāhi i roto i te hanganga o te taonga reo ake taiaho-resonator. Nehenehe o te huri wavelengths me whai he ropu paheke kuiti.

lasers Werohanga he Semiconductor rohe o radiation i roto i te ropu whanui, ka taea e te whakaputa i te mana te kounga kurupae iti o te maha Watts. Kei a ia ko te kahu kaha kikokore tikanga i waenganui i te p- me n-apa, hanga he heterojunction rua. He ngaro te tikanga o te herehere o te marama i roto i te ahunga lateral, e hua i roto i te ellipticity kurupae tiketike, me ngā paepae käore tiketike.

huānga ngōhiko mano, arā, o te ngohi o te p, aunui, ahei o te whakaputa i te kurupae o te mana kounga kāre o tekau o Watts.

Kaha huānga e rua-ahu o te p taea te whakaputa i te mana o rau o nga mano o Watts.

Mata-emitting lasers (VCSEL) emitting marama kounga putanga kurupae i roto i te maha o milliwatts hāngai ki te paraharaha. I tono te mata radiation o te whakaata resonator e i roto i te puka o paparanga i roto i dynes ¼ poipoi ki rerekē kuputohu atatāhapa. I runga i te maramara kotahi taea te hanga e rave rahi rau lasers, e oroko ake te taea o te production papatipu.

C VECSEL Lasers tāuru pūngao whatu me te resonator waho ahei o whakaputa i te kurupae o te mana kounga pai o te maha Watts i te maukati aratau.

Mahi Semiconductor taiaho momo Niniiraa aronui e hāngai ana i runga i ngā whakawhitinga i roto i te here (i roto i te rerekē ki te interband). Enei whakaaro emit i te rohe waenganui o te tūāwhiorangi pōkākā, i ētahi wā i roto i te awhe terahertz. E whakamahia ratou, mo te tauira, kia rite ki analyzers hau.

Semiconductor lasers: te tono me nga āhuatanga matua o

lasers ngōhiko mana-High ki tino electrically mäminga i ngaohiko āhua e whakamahia rite tikanga tino whai hua o te tuku pūngao lasers kāwanatanga totoka.

Ka taea e lasers Semiconductor mahi i roto i te whānuitanga nui o iarere e ngā te, e tata ana wahi pōkākā, me te waenganui kitea pōkākā o te hihinga. pūrere hanga ki te huri hoki izducheniya auau.

hohoro taea te p Taiaho pawa, me te modulate te mana whatu whakamahia e te i roto i te muka whatu foaki rārangi.

kua hanga enei āhuatanga e hangarau lasers Semiconductor te momo tino nui o te maser. E whakamahia ratou:

• he pūoko telemetry, pyrometers, altimeter whatu, rangefinders, mātanga, holography;
• i roto i te muka pūnaha tuku whatu me te rokiroki raraunga, pipiri pūnaha kōrero;
• pūreretā taiaho, projectors ataata, atatohu, waehere pae matawai, image matawai, CD-kaitākaro (DVD, CD, Blu-Ray);
• i roto i ngā pūnaha haumaru, tuhiwhakamuna aronui, aunoatanga, tohu;
• i roto i te metrology whatu me te hihinga;
• i roto i te pokanga, niho, cosmetology, therapy;
• purenga wai, whāwhā rauemi, köurarangi o lasers kāwanatanga totoka, mana o te tauhohe matū i roto i te kōmaka ahumahi, mīhini ahumahi, ngā pūnaha pātīmata, me ngā pūnaha rangi korero.

putanga he pini

Te nuinga taiaho Semiconductor mahia he kurupae tonu. Nā ki te wa noho poto o irahiko i roto i te taumata āriponga kahore e ratou rawa e tika ana mō te whakaputa i te ngātere Q-whakawhiti, engari aratau Manatü-tonu o te mahi tino e taea te whakanui ake i te mana generator aronui. I tua atu, kia whakamahia lasers Semiconductor mo te whakatupuranga o te aratau-kiia ultrashort pini whakawhitinga o te taonga ranei. mana toharite ngātere poto, te tikanga whāiti ki te torutoru milliwatts anake lasers VECSEL-optically mäminga, i whanganga putanga wattage ngātere picosecond ki te auautanga i te tekau o kikahera.

Puoro me te stabilization

Ko te painga o te irahiko noho poto i roto i te pēne āriponga o lasers Semiconductor ko te kaha ki te modulate te auau tiketike e whai VCSEL-lasers nui 10 GH. Kua whakamahia te reira i roto i te tuku raraunga whatu, hihinga, taiaho stabilization.