Teknụzụ Laser dị warara dị warara akụkụ nke abụọ
N'afọ 1960, laser ruby mbụ nke ụwa bụ laser steeti siri ike, nke e ji ike mmepụta dị elu na mkpuchi ogologo ogologo oge mara. Ọdịdị oghere pụrụ iche nke laser steeti siri ike na-eme ka ọ dịkwuo mfe n'ichepụta mmepụta linewidth dị warara. Ka ọ dị ugbu a, ụzọ ndị bụ isi etinyere gụnyere usoro oghere dị mkpụmkpụ, usoro mgbanaka otu ụzọ, usoro ọkọlọtọ intracavity, usoro oghere nke torsion pendulum, usoro grating olu Bragg na usoro ịgba mkpụrụ.
Onyonyo 7 na-egosi nhazi nke ọtụtụ ahụkarị otu-longitudinal mode siri ike-ala lasers.
Ọnụọgụ 7 (a) na-egosi ụkpụrụ ọrụ nke nhọrọ ọnọdụ ogologo ogologo dabere na ọkọlọtọ FP in-cavity, ya bụ, a na-eji ụdị nnyefe dị warara dị warara nke ọkọlọtọ iji mee ka mfu nke ụdị ogologo ogologo ndị ọzọ, nke mere na a na-ehichapụ ụdị ndị ọzọ ogologo oge na usoro asọmpi ọnọdụ n'ihi obere nnyefe ha, iji nweta ọrụ ogologo oge. Na mgbakwunye, enwere ike nweta ụfọdụ nsonazụ nlegharị anya n'ogologo wavelength site na ijikwa Angle na ọnọdụ okpomọkụ nke ọkọlọtọ FP na ịgbanwe oge etiti ọnọdụ ogologo. FIG. 7(b) na (c) egosi oscillator mgbanaka na-abụghị planar (NPRO) na usoro oghere nke torsional pendulum ejiri nweta otu mmepụta ụdị ogologo ogologo. The na-arụ ọrụ ụkpụrụ bụ ime ka doo propagate na otu ntụziaka na resonator, n'ụzọ dị irè kpochapụ na-ezighị ezi gbasara ohere nkesa nke ọnụ ọgụgụ nke tụgharịa ahụ na nkịtị guzo ife oghere, ma si otú zere mmetụta nke oghere oghere ọkụ mmetụta iji nweta otu longitudinal mode mmepụta. Ụkpụrụ nke nnukwu Bragg grating (VBG) mode nhọrọ yiri nke semiconductor na fiber warara ahịrị-obosara lasers ndị a kpọtụrụ aha na mbụ, ya bụ, site na iji VBG dị ka ihe nzacha, dabere na ya dị mma spectral selectivity na Angle selectivity, the oscillator oscillates na a kpọmkwem wavelength ma ọ bụ band iji nweta ọrụ nke longitudinal nhọrọ (dị ka 7 Figured nhọrọ).
N'otu oge ahụ, enwere ike ijikọta ọtụtụ usoro nhọrọ ogologo ogologo oge dabere na mkpa iji melite ọnọdụ nhọrọ ziri ezi, ka ọ dịkwuo warara linewidth, ma ọ bụ mee ka asọmpi ọnọdụ ahụ dị ike site n'iwebata mgbanwe mgbanwe ugboro ugboro na ụzọ ndị ọzọ, ma gbasaa mmepụta ogologo ogologo nke laser ka ọ na-arụ ọrụ na eriri eriri dị warara, nke siri ike ime maka ya.semiconductor lasernaeriri lasers.
(4) Brillouin laser
Brillouin laser dabeere kpaliri Brillouin agbasasị (SBS) mmetụta na-enweta ala mkpọtụ, warara linewidth mmepụta technology, ya ụkpụrụ bụ site photon na esịtidem acoustic ubi mmekọrịta na-emepụta a ụfọdụ ugboro nnofega nke Stokes photons, na na-na-aga n'ihu na-abawanye n'ime uru bandwit.
Onyonyo 8 na-egosi eserese dị larịị nke ntụgharị SBS na nhazi ntọala nke laser Brillouin.
N'ihi ụda ụda dị ala nke mpaghara egwu, Brillouin ugboro mgbanwe nke ihe na-abụkarị naanị 0.1-2 cm-1, ya mere na 1064 nm laser dị ka ọkụ mgbapụta, Stokes wavelength na-emekarị naanị ihe dịka 1064.01 nm, mana nke a pụtakwara na ngbanwe nke quantum ya dị elu na 9.9. Na mgbakwunye, n'ihi na Brillouin nweta linewidth nke ọkara na-abụkarị naanị nke usoro nke MHZ-ghz (na Brillouin nweta linewidth nke ụfọdụ siri ike mgbasa ozi bụ nanị banyere 10 MHz), ọ bụ nnọọ obere karịa uru linewidth nke laser na-arụ ọrụ umi nke iji nke 100 GHz, otú, The Stokes obi ụtọ na doro anya Brillouinspectrum na-egosi na-egosi na Brillouin spectrum laser narrow. oghere, na obosara ahịrị mmepụta ya bụ ọtụtụ iwu nke ịdị ukwuu dị warara karịa obosara ahịrị mgbapụta. Ka ọ dị ugbu a, laser Brillouin abụrụla ebe nyocha na mpaghara fotonics, enweela ọtụtụ akụkọ gbasara usoro Hz na nke sub-Hz nke mmepụta linewidth dị warara nke ukwuu.
Na-adịbeghị anya, Brillouin ngwaọrụ na waveguide Ọdịdị apụtawo na ubi nkefotonic microwave, ma na-etolite ngwa ngwa na ntụziaka nke miniaturization, njikọ dị elu na mkpebi dị elu. Na mgbakwunye, oghere Brillouin laser nke na-agba ọsọ dabere na ihe kristal ọhụrụ dị ka diamond abanyekwala n'ọhụụ nke ndị mmadụ n'ime afọ abụọ gara aga, ihe nrụpụta ọhụrụ ya na ike nke usoro ebili mmiri na oghere SBS cascade, ike nke laser Brillouin ruo 10 W, na-atọ ntọala maka ịgbasa ngwa ya.
Nkwekọrịta izugbe
Site na nyocha na-aga n'ihu nke ihe ọmụma dị oke ọnụ, lasers linewidth abụrụla ngwa dị mkpa na nyocha sayensị na arụmọrụ ha dị mma, dị ka interferometer laser LIGO maka nchọpụta ebili mmiri ndọda, nke na-eji ogologo ahịrị dị warara otu ugboro.laserna ogologo nke 1064 nm dị ka isi iyi mkpụrụ, na linewidth nke ìhè mkpụrụ dị n'ime 5 kHz. Ke adianade do, warara-obosara lasers na wavelength tunable na ọ dịghị mode na-awụlikwa elu na-egosikwa oké ngwa ike, karịsịa na coherent nkwukọrịta, nke nwere ike zuru okè izute mkpa nke wavelength nkewa multiplexing (WDM) ma ọ bụ ugboro nkewa multiplexing (FDM) maka wavelength (ma ọ bụ ugboro) tunability, na-atụ anya na-aghọ isi ngwaọrụ nke na-esote ọgbọ nke mobile nkwurịta okwu technology.
N'ọdịnihu, ihe ọhụrụ nke ihe laser na nkà na ụzụ nhazi ga-akwalite mkpakọ nke laser linewidth, mma nke nkwụsi ike ugboro ugboro, mgbasawanye nke wavelength nso na mma nke ike, na-emepe ụzọ maka mmadụ nchọpụta nke ụwa na-amaghị.
Oge nzipu: Nov-29-2023