Tsvagiridzo yazvino pamusoro pema lasers e semiconductor ane mavara maviri

Tsvagiridzo yazvino pamusoro pema lasers e semiconductor ane mavara maviri

MaSemiconductor disc lasers (SDL lasers), anozivikanwawo se vertical external cavity surface-emitting lasers (VECSEL), akakwezva vanhu vakawanda mumakore achangopfuura. Anosanganisa mabhenefiti e semiconductor gain uye solid-state resonators. Haangorerutsi chete zvinobudirira kuganhurira nzvimbo yekubuda kwe single-mode support yema semiconductor lasers akajairwa, asiwo ane flexible semiconductor bandgap design uye high material gain hunhu. Inogona kuonekwa mumhando dzakasiyana dzemashandisirwo, senge ruzha rushoma.laser yakamanikana ine upamhi hwemutsarakubuda, kugadzirwa kwepulse kwe ultra-short high-repetition, kugadzirwa kwe harmonic high-order, uye sodium guide star technology, nezvimwewo. Nekufambira mberi kwetekinoroji, zvinodiwa zvakanyanya zvakaiswa pamberi pekushanduka kwayo kwe wavelength. Semuenzaniso, ma light sources maviri-wavelength coherent akaratidza kukosha kwakanyanya kwekushandiswa muminda iri kubuda senge anti-interference lidar, holographic interferometry, wavelength division multiplexing communication, mid-infrared kana terahertz generation, uye multi-color optical frequency combs. Maitiro ekuwana high-brightness dual-color emission mu semiconductor disc lasers uye zvinobudirira kudzvinyirira gain competition pakati pe multiple wavelengths yagara iri dambudziko rekutsvaga mundima iyi.

Munguva pfupi yapfuura, paiva nemavara mavirilaser ye semiconductorChikwata cheChina chakapa zano rekugadzira chip itsva yekugadzirisa dambudziko iri. Kuburikidza nekutsvaga kwakadzama kwenhamba, vakaona kuti kugadzirisa zvakanyatsonaka tembiricha ye quantum well gain filtering uye semiconductor microcavity filtering effects zvinotarisirwa kuti zviwane kudzora kuchinjika kwe dual-color gain. Zvichibva pane izvi, chikwata chakabudirira kugadzira chip ye 960/1000 nm high-brightness gain. Iyi laser inoshanda mu fundamental mode pedyo ne diffraction limit, ine output brightness inosvika 310 MW/cm²sr.

Gain layer ye semiconductor disc ine ukobvu hwema micrometer mashoma chete, uye Fabry-Perot microcavity inoumbwa pakati pe semiconductor-air interface ne Bragg reflector iri pasi. Kubata semiconductor microcavity se built-in spectral filter ye chip kuchagadzirisa gain ye quantum well. Panguva iyi, microcavity filtering effect uye semiconductor gain zvine mwero wakasiyana wekudonha kwekushisa. Pamwe chete nekudzora tembiricha, switching uye regulation ye output wavelengths zvinogona kuwanikwa. Zvichibva pahunhu uhu, timu yakaverenga uye yakaisa gain peak ye quantum well pa 950 nm pa 300 K tembiricha, ne temperature drift rate ye gain wavelength iri inenge 0.37 nm/K. Zvadaro, timu yakagadzira longitudinal constraint factor ye chip ichishandisa nzira ye transmission matrix, ine peak wavelengths yeinenge 960 nm uye 1000 nm zvakateerana. Simulations yakaratidza kuti temperature drift rate yaive 0.08 nm/K chete. Nekushandisa tekinoroji yesimbi-organic chemical vapor deposition yekukura kwe epitaxial uye kugara ichivandudza maitiro ekukura, ma gain chips emhando yepamusoro akagadzirwa zvinobudirira. Mhedzisiro yekuyera kwe photoluminescence inoenderana zvizere nemhedzisiro ye simulation. Kuti kuderedze mutoro wekupisa uye kuwana simba guru rekutumira, maitiro ekurongedza ma semiconductor-diamond chips akawedzerwa.

Mushure mekupedza kurongedza chip, timu yakaita ongororo yakakwana yekushanda kwayo nelaser. Munzira yekushanda inoenderera mberi, nekudzora simba repombi kana tembiricha yekupisa, wavelength ye emission inogona kugadziriswa zviri nyore pakati pe960 nm ne1000 nm. Kana simba repombi riri mukati mechikamu chakati, laser inogonawo kuita dual-wavelength operation, ine wavelength interval inosvika 39.4 nm. Panguva ino, simba remafungu rinoenderera mberi rinosvika 3.8 W. Panguva iyi, laser inoshanda mu fundamental mode pedyo ne diffraction limit, ine beam quality factor M² ye1.1 chete uye kupenya kwakakwira kusvika 310 MW/cm²sr. Chikwata ichi chakaitawo tsvakiridzo pamusoro pe quasi-continuous wave performance yelaserChiratidzo chehuwandu hwehuwandu chakaonekwa zvinobudirira nekuisa kristaro yeLiB₃O₅ isina kujeka mugomba re resonant, zvichisimbisa kuenderana kwema wavelength maviri.

Kuburikidza nedhizaini iyi yehunyanzvi, musanganiswa we organic we quantum well gain filtering uye microcavity filtering wakawanikwa, zvichiisa hwaro hwekugadzira manyuko e laser ane mavara maviri. Panyaya yezviratidzo zvekushanda, iyi single-chip dual-color laser inowana kupenya kwakanyanya, kuchinjika kwakanyanya uye kubuda kwakanyatsojeka kwe coaxial beam. Kupenya kwayo kuri padanho repamusoro-soro munyika dzese mumunda we single-chip dual-color semiconductor lasers. Panyaya yekushandiswa kwazvino, kubudirira uku kunotarisirwa kuwedzera kunyatsoona uye kugona kudzivirira kupindira kwe multi-color lidar munzvimbo dzakaoma nekushandisa kupenya kwayo kwakanyanya uye hunhu hwe dual-color. Mumunda we optical frequency combs, kubuda kwayo kwakasimba kwe dual-wavelength kunogona kupa rutsigiro rwakakosha kune mashandisirwo akadai sekuyera kwakaringana kwe spectral uye high-resolution optical sensing.