THz Generation
ZnTe makristasi
Mumazuva ano THz nguva-domain spectroscopy (THz-TDS), nzira yakajairika ndeye THz pulses kugadzirwa ne optical rectification (OR) yeultrashort laser pulses uyezve kuonekwa nemahara nzvimbo electro-optic sampling (FEOS) mumakristaro asina mutsara etarisiro yakakosha. .
Mukugadzirisa kwemaziso, bandwidth yechiitiko chine simba laser pulse inoshandurwa kuva bandwidth yeTHz emission, nepo zvose zviri zviviri optical uye THz chiratidzo chinopararira kuburikidza nekristaro isina mutsara.
MuFEOS, zvese THz uye isina simba probe laser pulses inopararira kuburikidza neiyo isiri-linear crystal, inotungamira kuTHz munda-induced chikamu kudzoserwa kweyakanyanya prepolarized probe laser pulse.Iyi nhanho yekudzosa inoenderana nesimba remunda wemagetsi weiyo yakaonekwa THz chiratidzo.
Optical yakasangana neZnTe makristasi
10x10x(1+0.01)mm
Makristasi asina mutsetse akaita seZnTe, ane <110> crystal orientation anokwanisa kuiswa muOR uye FEOS pane zvakajairika.Zvisinei, makristasi e <100> orientation haana zvisizvo zvisingatarisirwi zvinodiwa kune OR uye FEOS, kunyange zvazvo THz yavo yemutsara uye zvinhu zvemaziso zvakafanana ne <110> -oriented crystals. Zvinodiwa zvekubudirira kweTHz chizvarwa kana kuonekwa. mune yakadaro isiri-linear crystal-based THz-TDS spectrometer inoenderana nechikamu pakati pekugadzira (kuona) optical pulse uye inogadzirwa (yakawanikwa) THz chiratidzo.Zvakadaro, makristasi asina mutsara akakodzera THz spectroscopy application ane yakasimba optical phonon resonances muTHz renji, kupararira kwakasimba kweTHz refractive index inodzikamisa nhanho-inofananidza frequency renji.
Makristasi akakora asina mutsara anopa THz-optical phase inoenderana yakatenderedza bhendi yakamanikana.Vanongotsigira chikamu chidiki cheiyo bandwidth ye generating (detecting) laser pulse, sezvo optical uye THz masaini achiona yakakura kufamba-kure pamusoro penguva refu-yekuparadzira madaro.Asi iyo yakagadzirwa (yakaonekwa) simba repamusoro rechiratidzo rinowanzo kukwirira kune kureba-kuparadzira chinhambwe.
Makristasi akaonda asina mutsara anopa yakanaka THz-optical phase inoenderana mukati meiyo yakazara bandwidth yekugadzira (inoona) laser pulse, asi iyo inogadzirwa (yakaonekwa) simba rechiratidzo kazhinji idiki, nekuti simba rechiratidzo rinoenderana neTHz-optical co-propagation madaro. .
Kuitira kupa yakakura-bhendi chikamu chinofananidzwa muTHz chizvarwa uye kuona uye kuchengetedza frequency resolution yakakwira zvakakwana panguva imwe chete, DIEN TECH yakabudirira kugadzira refractive yakasanganiswa ZnTe crystal- a 10µm ukobvu (110) ZnTe crystal pa (100)ZnTe bvisa.Mumakristasi akadaro THz-optical co-propagation yakakosha chete mukati me<110> chikamu chekristaro, uye maratidziro akawanda anofanirwa kureba yakazara yakasanganiswa yekristaro ukobvu.
