Khalase ea lifoto

Photonic crystal ke thepa ea sejoale-joale e nang le lisele tsa mantlha tse nang le index e phahameng le e tlase ea refractive le litekanyo tse ka bapisoang le bolelele ba khanya ho tsoa mofuteng o itseng oa pono. Likristale tsa melumo li sebelisoa ho optoelectronics. Ho nahanoa hore tšebeliso ea kristale ea photonic e tla lumella, mohlala. ho laola ho ata ha leqhubu le khanyang 'me ho tla hlahisa menyetla ea ho theha lipotoloho tse kopantsoeng tsa photonic le lisebelisoa tsa optical, hammoho le marang-rang a puisano a nang le bandwidth e kholo (ea taelo ea Pbps).

Phello ea boitsebiso bona tseleng ea leseli e tšoana le phello ea grating ka motsamao oa li-electrone ka kristale ea semiconductor. Kahoo lebitso "photonic crystal". Sebopeho sa kristale ea photonic se thibela ho ata ha maqhubu a leseli ka hare ho eona ka mefuta e itseng ea wavelengths. Ebe ho thoeng ke lekhalo la photon. Khopolo ea ho theha likristale tsa photonic e entsoe ka nako e le 'ngoe ho 1987 litsing tse peli tsa lipatlisiso tsa US.

Eli Jablonovich oa Bell Communications Research e New Jersey o sebelitse ka thepa bakeng sa li-transistors tsa photonic. Ke hona moo a ileng a qapa lentsoe "photonic bandgap". Ka nako e tšoanang, Sajiv John oa Univesithi ea Prieston, ha a ntse a sebetsa ho ntlafatsa katleho ea lisebelisoa tsa laser tse sebelisoang mehala ea puisano, o ile a fumana lekhalo le tšoanang. Ka 1991, Eli Yablonovich o ile a fumana kristale ea pele ea photonic. Ka 1997, ho ile ha qaptjoa mokhoa o mongata oa ho fumana likristale.

Mohlala oa tlhaho oa kristale ea photonic ea mahlakore a mararo ke opal, mohlala oa lera la photonic la lepheo la serurubele sa mofuta oa Morpho. Leha ho le joalo, likristale tsa photonic hangata li entsoe ka maiketsetso lilaboratoring tse tsoang ho silicon, eo hape e leng porous. Ho ea ka sebopeho sa bona, li arotsoe ka mahlakoreng a le mong, a mabeli le a mararo. Sebopeho se bonolo ka ho fetisisa ke sebopeho sa lehlakore le le leng. Likristale tsa photonic tse nang le karolo e le 'ngoe li tsebahala haholo ebile li sebelisoa ka nako e telele, tse khetholloang ke coefficient ea ho bonahatsa e itšetlehileng ka bolelele ba maqhubu a leseli la ketsahalo. Ha e le hantle, sena ke seipone sa Bragg, se nang le lihlopha tse ngata tse nang le li-indices tse phahameng le tse tlaase tse refractive. Seipone sa Bragg se sebetsa joalo ka filthara e tloaelehileng e tlase, maqhubu a mang a bonahala ha a mang a feta. Haeba u roala seipone sa Bragg ka har'a tube, u fumana sebopeho sa mahlakore a mabeli.

Mehlala ea likristale tsa photonic tse entsoeng ka maiketsetso ke li-photonic optical fibers le li-photonic layers, tseo, ka mor'a liphetoho tse 'maloa, li ka sebelisoang ho fetola tataiso ea lets'oao la leseli libakeng tse nyane haholo ho feta lits'ebetsong tse tloaelehileng tsa optics. Hona joale ho na le mekhoa e 'meli ea ho etsa mohlala oa likristale tsa photonic.

первый - PWM (mokhoa oa maqhubu a sefofane) e bua ka mehaho e nang le mahlakore a mabeli le a mabeli 'me e na le palo ea li-equations tsa theoretical, ho kenyelletsa le Bloch, Faraday, Maxwell equations. Ea bobeli Mokhoa oa ho etsa mohlala oa libopeho tsa fiber optic ke mokhoa oa FDTD (Finite Difference Time Domain), o kenyelletsang ho rarolla lipalo tsa Maxwell ka ho itšetleha ka nako bakeng sa matla a motlakase le matla a khoheli. Sena se lumella motho ho etsa liteko tsa lipalo mabapi le ho phatlalatsoa ha maqhubu a motlakase meahong ea kristale e fanoeng. Nakong e tlang, sena se lokela ho etsa hore ho khonehe ho fumana lisebelisoa tsa photonic tse nang le litekanyo tse lekanang le tsa lisebelisoa tsa microelectronic tse sebelisoang ho laola khanya.

Lisebelisoa tse ling tsa kristale ea photonic:

• Liipone tse khethiloeng tsa laser resonator,
• li-laser tsa maikutlo,
• likhoele tsa photonic (photonic crystal fiber), likhoele le planar,
• Li-semiconductors tsa lifoto, li-pigments tse tšoeu haholo,
• Li-LED tse nang le ts'ebetso e eketsehileng, li-Microresonator, Metamatadium - lisebelisoa tse setseng,
• Teko ea Broadband ea lisebelisoa tsa photonic,
• spectroscopy, interferometry kapa optical coherence tomography (OCT) - ho sebelisa phello e matla ea mohato.