Amakuru aheruka y'ubushakashatsi ku bijyanye na laser y'itumanaho ryo mu kirere

Amakuru aheruka y'ubushakashatsi bwalaser y'itumanaho ry'ikirere

Sisitemu ya interineti ya satelite, ifite uburyo bwo gukwirakwiza amakuru ku isi hose, ubutinda buke n'umuvuduko wo hejuru, yabaye icyerekezo cy'ingenzi cy'iterambere ry'ikoranabuhanga mu itumanaho mu gihe kizaza. Itumanaho rya laser mu kirere ni ryo koranabuhanga ry'ingenzi mu iterambere ry'ikoranabuhanga mu itumanaho rya satelite.Leza ya semiconductorigaragaza ubushobozi bwinshi bwo gukoresha muri sisitemu y'itumanaho rya laser yo mu kirere bitewe n'ubushobozi bwayo bwo hejuru, igihe kirekire, ingano nto, uburemere bworoheje n'imiterere myiza yo guhinduranya ibintu. Ariko, imirasire y'izuba, imirasire ya galactic cosmic hamwe n'umubare munini w'uduce dufite ingufu nyinshi nka proton, electron na iyoni zikomeye mu mukandara wa geomagnetic mu kirere bishobora gutuma imikorere y'igikoresho igabanuka ndetse bigatera impanuka y'igikoresho, ibi bikaba byabangamira cyane ubwizerwe n'ubudahangarwa bwa sisitemu y'itumanaho rya laser yo mu kirere.

ISHUSHO YA 1. Igikoresho cy'igerageza cyalaserisuzuma ry'imikorere

Vuba aha, itsinda ry’abashakashatsi mu Bushinwa ryateye intambwe ikomeye mu bushakashatsi ku mikorere ya laser za quantum dot mu gice cy’itumanaho ku isanzure. Binyuze mu gushushanya band nshya no kunoza imiterere y’akarere, itsinda ryashoboye gukora neza ibyavuye mu bushakashatsi bwa laser za communication zo mu isanzure, zifite imikorere myiza mu bidukikije bifite ingufu nyinshi, laser za quantum dot. Bakoze isesengura ryimbitse ry’imikorere y’ibikoresho bitandukanye mu isanzure. Ibisubizo by’igerageza bigaragaza ko imiterere ya quantum dot igaragaza inyungu zitangaje zo kudahungabana mu miterere y’ibidukikije bifite ingufu nyinshi mu gice cyo hasi cy’isi.

Hashingiwe kuri ubu buvumbuzi, itsinda ry’abashakashatsi ryateguye neza kandi rigahimba ubwoko bushya bwalaser y'udupira twa quantum. Iyi mashini igaragaza imikorere myiza cyane mu bidukikije bikomeye: kuri 3MeV proton injection kugeza kuri 7 × 1013 cm-2, laser igumana umurongo wo kongera ubugari bwa linewidth hafi ya zeru; Impuzandengo y'ubukana bw'ingufu (RIN) y'igikoresho ni ntoya nka -163 dB / Hz, ndetse no ku gipimo ntarengwa cyo gutera, RIN yiyongeraho 1 dB / Hz gusa. Byongeye kandi, laser iracyashobora gukora neza mu gihe urumuri rukomeye rwa -3.1dB rutanga igisubizo. Iyi ntambwe ntiyemeza gusa ibyavuye mu bushakashatsi buheruka bwa lasers zo mu kirere, ahubwo inatanga uburyo bwizewe bwo gukora.igisubizo cy'isoko ry'urumurimu kubaka imiyoboro y'itumanaho rya satelite ikora neza cyane.