Tsvagiridzo yazvino pane mbiri-ruvara semiconductor lasers

Tsvagiridzo yazvino pane mbiri-ruvara semiconductor lasers

Semiconductor disc lasers (SDL lasers), inozivikanwawo seyakamira ekunze cavity-emitting lasers (VECSEL), yakwezva kutarisisa kwakawanda mumakore achangopfuura. Iyo inosanganisa zvakanakira semiconductor kuwana uye yakasimba-nyika resonators. Izvo hazvingoite zvinobudirira kudzikisira emission nharaunda kudzikiswa kweimwe-modhi yerutsigiro kune yakajairwa semiconductor lasers, asi zvakare inoshanduka inoshanduka semiconductor bandgap dhizaini uye yakakwirira zvinhu zvekuwana maitiro. Inogona kuonekwa mune zvakasiyana-siyana zvekushandiswa kwemamiriro ezvinhu, zvakadai sepasi-ruzhanhete-linewidth laserkubuda, ultra-short high-repetition pulse generation, high-order harmonic generation, uye sodium guide star tekinoroji, etc. Nekufambira mberi kwekombiyuta, zvinodiwa zvepamusoro zvakaiswa mberi nokuda kwekushanduka kwayo kwewavelength. Semuyenzaniso, maviri-wavelength anobatana magetsi masosi akaratidzira yakanyanyisa kukosha kwekushandisa mundima dzichiri kusimukira senge anti-interference lidar, holographic interferometry, wavelength division multiplexing kutaurirana, yepakati-infrared kana terahertz chizvarwa, uye akawanda-mavara optical frequency mizinga. Nzira yekuwana sei kupenya kwepamusoro-kupenya-mavara-kubuda mu semiconductor disc lasers uye kunyatsodzvinyirira kuwana makwikwi pakati peawavelengths akawanda kwagara kuri kuoma kwekutsvaga munharaunda iyi.

Munguva pfupi yapfuura, maviri-ruvarasemiconductor lasertimu muChina yakurudzira dhizaini yekugadzira kugadzirisa dambudziko iri. Kuburikidza nekutsvaga kwakadzama kwenhamba, vakawana kuti kunyatso kudzora tembiricha-inoenderana nehuwandu hunowana kusefa uye semiconductor microcavity kusefa mhedzisiro inotarisirwa kuwana inochinjika kutonga kwehuviri-ruvara kuwana. Kubva pane izvi, timu yakabudirira kugadzira 960/1000 nm yakakwirira-kupenya kuwana chip. Iyi laser inoshanda mune yakakosha modhi padhuze neiyo diffraction muganho, ine inobuda inopenya yakakwira senge 310 MW/cm²sr.

Iyo yekuwana layer ye semiconductor disc ingori mashoma mamicrometer akakora, uye Fabry-Perot microcavity inoumbwa pakati pe semiconductor-air interface uye pasi yakagoverwa Bragg reflector. Kurapa iyo semiconductor microcavity seyakavakirwa-mukati spectral sefa yechip inogadzirisa kuwana kweiyo quantum zvakanaka. Zvichakadaro, iyo microcavity kusefa mhedzisiro uye semiconductor kuwana kune akasiyana tembiricha yekudonha mitengo. Yakasanganiswa nekudzora tembiricha, iyo switching uye mutemo wekubuda wavelengths inogona kuwanikwa. Zvichienderana nehunhu uhwu, timu yakaverengera ndokuisa iyo yepamusoro yehuwandu zvakanaka pa 950 nm pa 300 K tembiricha, neiyo tembiricha yekudonha mwero weiyo wavelength inosvika 0.37 nm/K. Mushure mezvo, timu yakagadzira iyo longitudinal constraint factor yechip ichishandisa nzira yekutumira matrix, ine peak wavelengths inosvika 960 nm uye 1000 nm zvakateerana. Simulations dzakaratidza kuti tembiricha yekudonha yaingova 0.08 nm/K. Nekushandisa simbi-organic kemikari vapor deposition tekinoroji yekukura epitaxial uye nekuenderera mberi nekugadzirisa maitiro ekukura, emhando yepamusoro kuwana machipisi akagadzirwa zvinobudirira. Migumisiro yekuyera ye photoluminescence inonyatsoenderana nemigumisiro yekufananidza. Kurerutsa mutoro wekupisa uye kuwana yakakwirira-simba kutapurirana, iyo semiconductor-diamond chip yekurongedza maitiro yakagadziridzwa zvakare.

Mushure mekupedza kurongedza chip, timu yakaita ongororo yakazara yekuita kwayo laser. Mukuenderera mberi kwekushanda modhi, nekudzora simba repombi kana tembiricha yekunyura, iyo emission wavelength inogona kuchinjika kugadziridzwa pakati pe960 nm uye 1000 nm. Kana simba repombi riri mukati meimwe siyana, iyo laser inogona zvakare kuwana mbiri-wavelength kushanda, ine wavelength yepakati inosvika 39.4 nm. Panguva ino, iyo yakanyanya kuenderera inoenderera simba simba inosvika 3.8 W. Zvichakadaro, iyo laser inoshanda mune yakakosha modhi padhuze neiyo diffraction muganhu, ine beam quality factor M² ye1.1 chete uye kupenya kwakakwira senge 310 MW/cm²sr. Chikwata ichi zvakare chakaita tsvakiridzo nezve quasi-inoenderera mberi wave performance yelaser. Iyo sum frequency chiratidzo yakaonekwa zvakabudirira nekuisa iyo LiB₃O₅ nonlinear optical crystal mugomba resonant, ichisimbisa kuwiriraniswa kwemaviri mafungu.

Kuburikidza neiyi hungwaru dhizaini dhizaini, iyo organic musanganiswa wequantum zvakanaka kuwana kusefa uye microcavity kusefa kwave kuwanikwa, kuisa hwaro hwedhizaini yekuzadzikiswa kwemaviri-ruvara laser masosi. Panyaya yezviratidzo zvekushanda, iyi single-chip dual-color laser inowana kupenya kwakanyanya, kuchinjika kwepamusoro uye chaiyo coaxial beam kubuda. Kupenya kwaro kuri padanho rinotungamira repasi rose mumunda wazvino we-single-chip dual-color semiconductor lasers. Panyaya yekushandiswa kunoshanda, kubudirira uku kunotarisirwa kusimudzira zvinobudirira kutarisisa kwekuona uye kupesana-kukanganisa kugona kwe-multi-color lidar munzvimbo dzakaoma nekusimudzira kupenya kwayo kwakanyanya uye mbiri-mavara maitiro. Mundima ye optical frequency combs, yakagadzika maviri-wavelength kubuda kwayo inogona kupa yakakosha rutsigiro rwezvishandiso senge chaiyo spectral kuyerwa uye yakakwirira-resolution optical sensing.