Kushanda musimboti we semiconductor laser

Kushanda musimboti wesemiconductor laser

Chekutanga pane zvese, iyo parameter inodiwa ye semiconductor lasers inounzwa, kunyanya kusanganisira zvinotevera zvinhu:
1. Photoelectric performance: kusanganisira kupera kwehuwandu, dynamic linewidth uye mamwe maparameter, aya maparameter anobata zvakananga kushanda kwe semiconductor lasers muhutano hwekukurukurirana.
2. Zvimiro zvemaitiro: senge saizi inopenya uye kurongeka, tsananguro yekupedzisira yekubvisa, saizi yekuisa uye saizi yerondedzero.
3. Wavelength: The wavelength range of semiconductor laser is 650 ~ 1650nm, uye kururama kwakakwirira.
4. Threshold current (Ith) uye kushanda ikozvino (lop) : Iyi mitsetse inogadzirisa mamiriro ekutanga-up uye mamiriro ekushanda e semiconductor laser.
5. Simba uye magetsi: Nekuyera simba, magetsi uye ikozvino ye semiconductor laser kubasa, PV, PI uye IV curves inogona kukweverwa kuti inzwisise maitiro avo ekushanda.

Kushanda musimboti
1. Kuwana mamiriro: The inversion kugoverwa kwevatakuri vanotakura mu lasing medium (inoshanda nzvimbo) inotangwa. Mune semiconductor, simba remaerekitironi rinomiririrwa nenhevedzano yeinoda kuenderera nhanho dzesimba. Naizvozvo, huwandu hwemaerekitironi pazasi pebhendi rekufambisa munzvimbo ine simba repamusoro hunofanirwa kunge hwakakura kupfuura huwandu hwemaburi ari pamusoro pebhendi revalence munzvimbo ine simba shoma pakati penzvimbo mbiri dzebhendi remagetsi kuti uwane kupinduka. nhamba yezvikamu. Izvi zvinowanikwa kuburikidza nekushandisa kurerekera kwakanaka kune homojunction kana heterojunction uye jekiseni anotakura anodiwa muchikamu chinoshanda kuti afadze maerekitironi kubva pazasi simba revharendi bhendi kune yakakwirira simba conduction bhendi. Kana huwandu hukuru hwemaerekitironi munzvimbo yakadzoserwa yehuwandu hwevanhu hwasanganazve nemakomba, kubuda kunokurudzirwa kunoitika.
2. Kuti unyatsowana mwaranzi yakabatana yakasimudzwa, mwaranzi inokurudzirwa inofanirwa kudzoserwa kakawanda muoptical resonator kuti igadzire laser oscillation, resonator yelaser inoumbwa neakasikwa cleavage pamusoro pe semiconductor crystal segirazi, kazhinji. akaputirwa pamagumo echiedza ane high reflection multilayer dielectric film, uye nzvimbo yakatsetseka inoputirwa nefirimu yakaderedzwa. Kune iyo Fp cavity (Fabry-Perot cavity) semiconductor laser, iyo FP mhango inogona kugadzirwa nyore nekushandisa yakasikwa cleavage ndege perpendicular kune pn junction ndege yekristaro.
(3) Kuti igadzire yakagadzikana oscillation, iyo laser svikiro inofanirwa kukwanisa kupa yakakura yakakwana kuwana kutsiva kurasikirwa kwemaziso kunokonzerwa neresonator uye kurasikirwa kunokonzerwa nekubuda kwelaser kubva mugomba, uye kugara ichiwedzera nzvimbo yakareruka mumhango. Izvi zvinofanirwa kuve nejekiseni rakasimba rakakwana razvino, ndiko kuti, pane inokwana particle nhamba inversion, iyo yakakwira dhigirii yenhamba yenhamba inversion, iyo yakakura kuwana, ndiko kuti, chinodiwa chinofanirwa kusangana neimwe yazvino chikumbaridzo mamiriro. Kana iyo laser yasvika pachikumbaridzo, mwenje ine chaiwo wavelength inogona kudzoserwa mugomba uye nekukwidziridzwa, uye pakupedzisira inoumba laser uye inoenderera kuburitsa.

Performance chinodiwa
1. Modulation bandwidth uye chiyero: semiconductor lasers uye yavo modulation tekinoroji yakakosha muwireless optical communication, uye iyo modulation bandwidth uye chiyero zvinokanganisa zvakananga hutano hwekutaurirana. Yemukati modulated laser (zvakananga modulated laser) inokodzera minda yakasiyana mune optical fiber kutaurirana nekuda kwekumhanya kwayo kwekufambisa uye mutengo wakaderera.
2. Spectral maitiro uye modulation maitiro: Semiconductor akagovera mhinduro lasers (DFB laser) yave yakakosha mwenje sosi mune optical fiber kutaurirana uye space Optical kutaurirana nekuda kweakanakisa spectral maitiro uye modulation maitiro.
3. Mutengo uye kugadzirwa kwemazhinji: Semiconductor lasers inoda kuva nezvakanakira mutengo wakaderera uye kugadzirwa kwemazhinji kusangana nezvinodiwa zvehukuru-hukuru kugadzirwa uye maapplication.
4. Simba rekushandisa uye kuvimbika: Mumamiriro ekushandiswa akadai se data data, semiconductor lasers inoda kushandiswa kwesimba shoma uye kuvimbika kwepamusoro kuve nechokwadi chekushanda kwakasimba kwenguva refu.