Kupu Whakataki
Ko te rama-waewae (MIR) i roto i te awhe o te 2-20 µm he pai mo te tohu matū me te koiora na runga i te maha o nga raina whakaurunga ngota ngota i roto i tenei rohe matakite.Ka taea e te puna tuitui, iti-hurihuri me te kapi tukutahi o te awhe MIR whanui ka taea ano nga tono hou penei i te mirco-spectroscopy , femtosecond pump-probe spectroscopy , me nga inenga tairongo-awhe-nui Tae noa ki naianei he maha nga kaupapa kua
i whakawhanakehia hei whakaputa i te iraruke MIR tuitui, penei i nga raina kurupae tukutahi, taiaho cascade quantum, puna supercontinuum, oscillator parametric whatu (OPO) me nga whakakaha parametric optical (OPA).Kei enei kaupapa katoa o raatau ake kaha me o raatau ngoikoretanga i roto i nga ahuatanga o te uaua, te bandwidth, te mana, te pai, me te roanga o te pupuhi.I roto i a raatau, ko te whakaputanga rerenga rereke-a-roto (IDFG) kei te aro nui ki te whakawhanaketanga o nga lasers femtosecond 2 µm kaha-nui ka taea te pupuhi i nga kiripiri kore-waikura kore-waikura iti ki te whakaputa i te maramara MIR hono-nui-a-iwi.Ka whakatauritea ki nga OPO me nga OPA e whakamahia ana, ka taea e IDFG te whakaiti i te uauatanga o te punaha me te whakarei ake i te pono, na te mea ka tangohia nga kurupae motuhake e rua, nga rua ranei i te tino tika.I tua atu, ko te putanga MIR he mea mau tonu te kawe-kopaki-waahanga (CEP) me te IDFG .
Whakaahua 1
Awhiowhio tuku o te 1-mm-te matotoru kaore i paniakaraihe BGSena DIEN TECH.Ko te whakaurunga e whakaatu ana i te karaihe tuuturu i whakamahia i tenei whakamatautau.
Whakaahua 2
Tatūnga whakamātautau o te whakatipuranga MIR me te akaraihe BGSe.OAP, whakaata parabolic tuaka-waho me te roa arotahi whai hua o te 20 mm;HWP, pereti haurua ngaru;TFP, polarizer kiriata angiangi;LPF, tātari haere-roa.
I te tau 2010, i hangaia he karaihe biaxial chalcogenide nonlinear hou, BaGa4Se7 (BGSe), ma te whakamahi i te tikanga Bridgman-Stockbarger.He awhe maramara whanui mai i te 0.47 ki te 18 µm (penei i te Whakaaturanga 1) me nga whakarea-kore o te d11 = 24.3 pm/V me te d13 = 20.4 pm/V.Ko te matapihi maramara o BGSe he tino whanui atu i te ZGP me te LGS ahakoa he iti ake tona korerangi i te ZGP (75 ± 8 pm/V).He rereke ki a GaSe, ka taea hoki te tapahi i te BGSe ki te koki whakaorite-waa e hiahiatia ana, ka taea hoki te whakakikorua ki te whakaahuru.
Ko te tatūnga whakamātautau kei te whakaahua 2(a).Ko nga pupuhi taraiwa i te tuatahi ka puta mai i te hanga-a-whare a Kerr-lens aratau-rakau Cr:ZnS oscillator ki te polycrystalline Cr:ZnS tioata (5 × 2 × 9 mm3 , tuku=15% i te 1908nm) i te mea ka maminga te reo taonga e te Tm-doped muka laser i 1908nm.Ko te oscillation i roto i te kohao ngaru-tu ka tukuna he 45-fs i te tere tukurua o te 69 MHz me te kaha toharite o te 1 W i te roangaru kawe o te 2.4 µm.Ka whakanuia te mana ki te 3.3 W i roto i te hanga-a-whare e rua-waahi polycrystalline Cr:ZnS amplifier (5 × 2 × 6 mm3 , tuku=20% i 1908nm me 5 × 2 × 9 mm3 , tuku=15% i 1908nm), a ka inehia te roanga o te pupuhi whakaputa ki te taputapu kupenga whatu (SHG-FROG) i hangaia i te kainga.
