Kuyinii-laser ye-semiconductor yokuxhumana okubanzi
Ama-Laser asetshenziswa cishe kuzo zonke izinhlelo zokuzwa ze-fiber optic ezisabalalisiwe (DOFS) ngoba angazifaka kahleama-laser anamandla amakhuluzibe yimicu. Kodwa-ke, kunezinhlobo ezahlukene zama-laser, futhi lapha izinhlobo eziyinhloko zethulwa ngokulandelana kobude bokuhambisana obukhulayo, okungukuthi ububanzi be-spectral obuncishisiwe. Ngokuvamile, i-laser yakhiwe nge-gain medium ekhulisa ukukhanya okusakazeka kuyo futhi inikeze impendulo yokuthumela ukukhanya okukhulisiwe emuva ku-gain medium ukuze kubuyelwe emuva. Ngakho-ke, kusukela ekukhishweni okuzenzakalelayo ngaphakathi kwe-gain medium, kuzokhiqizwa amaza okukhanya aqinile futhi aqondakalayo, izici zawo zincike kokubili ku-gain medium kanye nezakhiwo zempendulo. Ngokuvamile, impendulo inikeza isakhiwo esivumelanayo esakha imodi eyodwa noma ngaphezulu, ngayinye ikhipha ngaphakathi kobubanzi obuncane be-spectral.
Ukuxhumana okubanzii-laser ye-semiconductor, i-laser ye-semiconductor elula neyokuqala, iqukethe indawo yokuthola i-semiconductor eyakhiwe yi-pn junction yezinto eziqondile ze-bandgap (njenge-GaAs), kanye nempendulo enikezwa ukubonakaliswa okuvela ezicini ezihlanziwe ze-laser chip; Ubude bama-laser chips ngokuvamile bungama-micrometer angamakhulu amaningana. Lesi sakhiwo sokuxhuma senzelwe ukuvimbela ngesikhathi esisodwa abathwali be-charge kanye nokukhanya okusakazeka ngaphakathi kwesifunda sokuthola. Njengama-diode, lawa madivayisi anokuxhumana kukagesi kuzo zombili izinhlangothi. Kudivayisi yokuxhumana ebanzi, ububanzi be-electrode ephezulu bungama-micrometer angamashumi amaningana (ngokuvamile cishe ama-75 μ m); Ngakho-ke, ukukhishwa kokukhanya kwakha umugqa kulobu bubanzi, okuyimodi eyodwa endizeni eqondile endaweni yokuhlangana, futhi kuveza ukusatshalaliswa kwensimu yokukhanya yemodi eminingi endizeni ehambisana nendawo yokuhlangana. Ngenxa yale modi yokukhipha, ama-laser okuxhumana abanzi angahlanganiswa kuphela ngempumelelo kuma-fiber emodi eminingi. Kodwa-ke, amandla e-laser yokuxhumana ebanzi aphezulu kakhulu, futhi ngaphansi kwezimo zokusebenza eziqhutshwayo, idivayisi ye-electrode engu-75 μ m ngokuvamile ingakhipha amandla aphezulu angaphezu kwama-10 W.
I-laser yokuxhumana ebanziAma-diode afanele izinhlobo ezithile zezinhlelo zokuzwa izinga lokushisa ezisatshalaliswa nge-Raman multimode, njengoba lezi zinhlelo zingadingi ubumsulwa obuphezulu be-spectral. Ziyasebenza futhi kuma-sensor asekelwe ekulahlekelweni, njengalezo zinhlelo ezisebenzisa ukugoba okuncane okulawulwayo njengendlela yokuzwa.
Isikhathi sokuthunyelwe: Mashi-11-2026