Ọnụ ọgụgụ nkwughachi dị elu dị elu pulsed laser

Ọnụ ọgụgụ nkwughachi dị elu dị elu pulsed laser

N'ime ụwa microscopic nke mmekọrịta dị n'etiti ọkụ na ihe, ultra-high repetition rate pulses (UHRPs) na-eme dị ka ndị na-achị oge kpọmkwem - ha na-emegharị ihe karịrị otu ijeri ugboro kwa nkeji (1GHz), na-ejide mkpịsị aka mkpụrụ ndụ nke mkpụrụ ndụ cancer na ihe ngosi dị iche iche, na-ebu nnukwu data na nkwurịta okwu ngwa anya, na calibth na-ahazi telescope. Karịsịa na mmụba nke akụkụ nchọpụta nke lidar, terahertz ultra-high repetition rate pulsed lasers (100-300 GHz) na-aghọ ngwá ọrụ dị ike iji banye n'ime oyi akwa nnyonye anya, na-emegharị ókèala nke echiche akụkụ atọ site na iji ikike ime ihe na spatiotemporal na ọkwa photon. Ka ọ dị ugbu a, iji microstructures arụrụ arụ, dị ka oghere micro-mgbanaka nke chọrọ nhazi nhazi nanoscale iji mepụta ngwakọta ikuku anọ (FWM), bụ otu n'ime ụzọ isi nweta ọnụọgụ ngwa anya nkwughachi dị elu. Ndị ọkà mmụta sayensị na-elekwasị anya na idozi nsogbu injinịa na nhazi nke ihe owuwu dị oke mma, nsogbu ngbanwe ugboro ugboro n'oge mmalite pulse, yana nsogbu nrụpụta arụmọrụ mgbe ọgbọ pulse gasịrị. Ụzọ ọzọ bụ iji eriri ndị na-abụghị nke ntanetị na-eji mmetụta mgbanwe mgbanwe ma ọ bụ mmetụta FWM n'ime oghere laser iji kpalie UHRPs. Ka ọ dị ugbu a, anyị ka chọrọ “onye na-ahazi oge”.

Usoro nke ịmepụta UHRP site n'ịgbanye ultrafast pulses iji kpalie mmetụta FWM na-adịghị mma ka akọwara dị ka "mgbanye ọkụ ultrafast". Dị iche na nke a kpọtụrụ aha n'elu microring oghere atụmatụ na-achọ na-aga n'ihu pumping, kpọmkwem ukpụhọde nke detuning ịchịkwa pulse ọgbọ, na iji nke ukwuu na-abụghị online media wedata FWM ọnụ ụzọ, nke a "mgbanye" na-adabere na ọnụ ọgụgụ kasị elu ike e ji mara ultrafast pulses iji kpalie FWM ozugbo, na mgbe "mgbanye gbanyụọ", nweta UHRPsus.

Ọgụgụ 1 na-akọwa usoro bụ isi nke iji nweta nhazi onwe nke pulse dabere na mkpali mkpụrụ obi ultrafast nke oghere mgbanaka eriri dissipative. Mkpụrụ mkpụrụ osisi ultrashort a na-agbanye n'èzí (oge T0, ugboro ugboro F) na-eje ozi dị ka "isi iyi mgbanye" iji kpalie ogige ụda ike dị elu n'ime oghere mgbasa. The intracellular uru modul na-arụ ọrụ na synergy na spectral shaper iji tọghata mkpụrụ usu ume n'ime a mbo spectral nzaghachi site n'ịgbakọ ụkpụrụ na oge-ugboro ngalaba. Usoro a na-agbaji site na njedebe nke mgbapụta ọdịnala na-aga n'ihu: mkpụrụ akụ mkpụrụ ahụ na-emechi mgbe ọ ruru nkwụsị FWM ọnụ ụzọ, na oghere mgbasa ahụ na-edobe ọnọdụ nhazi nke onwe ya site na nguzozi ike nke uru na ọnwụ, yana ugboro ugboro ugboro ugboro bụ Fs (dakọtara na intrinsic cavity of the FFv).

Ọmụmụ ihe a mekwara nkwenye echiche. Dabere na paramita anabatara na nhazi nnwale yana jiri 1psultrafast pulse laserdị ka ubi mbụ, a na-eme simulation ọnụọgụ na usoro evolushọn nke ngalaba oge ụbụrụ na ugboro ole n'ime oghere laser. Achọpụtara na pulse ahụ gafere n'ụzọ atọ: mgbawa pulse, pulse periodic oscillation, na pulse uniform nkesa n'ime oghere laser dum. Nsonaazụ ọnụọgụ a na-egosipụtakwa n'ụzọ zuru oke njirimara nhazi onwe onye nkepulse laser.

Site n'ịkwalite mmetụta ngwakọta anọ na-efegharị anọ n'ime oghere mgbanaka eriri eriri site na mgbanaka mkpụrụ osisi ultrafast, ọgbọ na-ahazi onwe ya na mmezi nke sub-THZ ultra-high repetition pulses (mpụta kwụsiri ike nke 0.5W ike mgbe agbanyụchara mkpụrụ) enwetara nke ọma, na-enye ụdị isi iyi ọhụrụ maka mpaghara sub-THZ nwere ike ịkwalite ọkwa igwe ojii. millimeter larịị. The pulse onwe-akwado mma nke ukwuu ebelata usoro ike oriri. Ọdịdị fiber niile na-eme ka nkwụsi ike dị elu na eriri nchekwa anya 1.5 μm. N'ileghachi anya n'ọdịniihu, a na-atụ anya na teknụzụ a ga-ebuga mmalite nke lidar a na-agbanye ụgbọ ala gaa na miniaturization (dabere na MZI micro-filters) na nchọpụta ogologo oge (mgbasa ike ruo> 1W), ma gaa n'ihu na-emegharị n'echiche nke gburugburu ebe mgbagwoju anya site na nchikota ọtụtụ ihe na-achịkọta ọkụ na ụkpụrụ ọgụgụ isi.