Ososayensi Bakhe Indlela Entsha Yedivayisi Esebenza Kakhulu Nenembe Kakhulu Ye-3D Yokubunjwa Kokukhanya

Ubuchwepheshe besimanje obufana ne-optical computing, i-photonics ehlanganisiwe, ne-digital holography konke kudinga ukushintshwa okuguquguqukayo kwamasignali okukhanya endaweni enezinhlangothi ezintathu. Kule nqubo, ukubumba nokuqondisa ukuhamba kokukhanya ngokuvumelana nesicelo esifunekayo kubalulekile.

Ngenxa yokuthi ukugeleza kokukhanya ngaphakathi kwendawo kulawulwa yinkomba yayo ye-refractive, ukuguqulwa okuqondile kwenkomba ye-refractive kuyadingeka ukuze kulawulwe izindlela zokubona ngaphakathi kwendawo. Ukuze kuzuzwe lokhu, ososayensi basungule lokho okubizwa ngokuthi “ama-aperiodic photonic volume elements” (APVEs), okungama-microscale voxels anezinkomba ezithile zokuphinda zibekwe ezindaweni ezinqunyiwe ukuze ziqondise ukuhamba kokukhanya ngendlela elawulwayo. Kodwa-ke, ukuqopha lezi zakhi kudinga ukunemba okuphezulu, futhi izinto eziningi zokubumba ukukhanya zikhawulelwe ekucushweni kwe-2D noma ekugcineni kuphumele ekuncishisweni kwamaphrofayili e-beam.

Muva nje, ucwaningo olushicilelwe kujenali yezithombe "i-APNexus" yethule indlela elula yokukhiqiza ama-APVE anembe kakhulu, futhi yabonisa ukusetshenziswa kwawo kuhlu lwezinhlelo zokusebenza. Ucwaningo lwaluholwa u-Alexander Jesacher wase-Medical University of Innsbruck e-Austria, futhi lunqoba imikhawulo ekubunjweni kokukhanya okukhulunywe ngakho ekuqaleni.

Indlela isebenzisa indlela ebizwa ngokuthi “direct laser writing” (DLW), okuwubuchwepheshe be-laser enesivinini esikhulu obuhlela ama-voxel anezinkomba ezithize zokugqama ngezinhlangothi ezintathu ngaphakathi kwengilazi ye-borosilicate ukuze iqondise ngokunembile ukukhanya kwezinhlelo zokusebenza ezihlukahlukene.

Ngokwemibiko, abacwaningi baklame i-algorithm ekhuthaza ukukhanya okudlula phakathi nendawo ukuze kunqunywe indawo efanele yama-voxels ukuze kuzuzwe ukunemba okudingekayo. Ngokusekelwe kulokhu, bakwazile ukukhiqiza ama-voxel angu-154,000 kuya kwangu-308,000 ngemizuzu engu-20, i-voxel ngayinye ibe nevolumu cishe engu-1.75 μm × 7.5 μm × 10 μm. Ngaphezu kwalokho, basebenzise isilawuli se-wavefront esishintshashintshayo ukuze banxephezele nganoma yikuphi ukuphambuka okuyindilinga (ukuhlanekezelwa kwephrofayela ye-beam) ye-laser egxile ku-substrate phakathi nenqubo. Lokhu kuqinisekise ukuvumelana kwephrofayili ye-voxel ngayinye kukho konke ukujula phakathi nendawo.

Ithimba lenze izinhlobo ezintathu zama-APVE ukuze libonise ukusebenza kwendlela: i-shape yokuqina yokulawula ukusatshalaliswa kokuqina kwe-beam yokufaka, i-multiplexer ye-RGB yokulawula ukudluliswa kwe-spectra ebomvu, eluhlaza, neluhlaza okwesibhakabhaka ku-beam yokufaka, kanye nesihlungi semodi ye-Hermite-Gaussian (HG) yokuthuthukisa isivinini sokudluliswa kwedatha.

Ithimba lisebenzise i-intensity shaper ukuguqula i-Gaussian beam ibe ukusabalalisa kokukhanya okumise okwe-arc microscale, lase lisebenzisa i-multiplexer ukumela izingxenye ezihlukene zokusabalalisa okumise okwe-arc ngemibala ehlukene, futhi ekugcineni lasebenzisa isihlungi semodi ye-HG ukuguqula amamodi amaningi e-Gaussian adluliselwa ngamafiber okukhanya abe amamodi e-HG. Kuzo zonke izimo, idivayisi ikwazile ukudlulisa isignali yokokufaka ngaphandle kokulahlekelwa okukhulu futhi yazuza ukusebenza kahle kokuphulwa kwerekhodi okufika ku-80%, ibeka ibhentshimakhi entsha yama-APVE.

Le ndlela entsha ivula umnyango wenkundla yezindleko eziphansi efanelekile yokwenza i-prototyping esheshayo yamadivayisi wokubumba ukukhanya kwe-3D ahlanganiswe kakhulu. Ngaphezu kokulula kwayo, izindleko eziphansi, nokunemba okuphezulu, le ndlela ingase inwetshelwe nakwamanye ama-substrates, kuhlanganise nezinto ezingezona umugqa. Ukuguquguquka kwayo kuyenza ifaneleke ukuklama anhlobonhlobo amadivaysi e-3D azosetshenziswa emikhakheni efana nokudluliswa kolwazi, i-optical computing, i-multimode fibre imaging, i-nonlinear photonics, ne-quantum optics.

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