Ewebataeriri pulsed lasers
Fiber Pulsed lasers bụngwaọrụ lasernke na-eji eriri nke nwere ion ụwa na-adịghị ahụkebe (dị ka ytterbium, erbium, thulium, wdg) dị ka ihe na-enweta uru. Ha na-enwe usoro uru, oghere anya resonant, na isi iyi mgbapụta. Teknụzụ ọgbara ọhụrụ ya gụnyere teknụzụ Q-switching (ọkwa nke nanosecond), mkpọchi ọnọdụ na-arụ ọrụ (ọkwa picosecond), mkpọchi ọnọdụ ngafe (ọkwa femtosecond), na teknụzụ isi oscillation amplification (MOPA).
Ngwa ụlọ ọrụ na-ekpuchi ịkpụ ígwè, ịgbado ọkụ, nhicha laser na batrị lithium TAB na-egbutu n'ọhịa ike ọhụrụ, na ikike mmepụta multi-mode na-eru ọkwa iri puku watt. N'ọhịa nke lidar, 1550nm pulsed lasers, na ike ha dị elu na njirimara nchekwa anya, na-etinyere na usoro radar na-agbanye ụgbọ ala.
Ụdị ngwaahịa bụ isi gụnyere ụdị Q-switched, ụdị MOPA na eriri ike dị elulasers pulsed. Otu:
1. Q-switched fiber laser: Ụkpụrụ nke Q-ịgbanwe bụ ịgbakwunye ngwaọrụ na-efunahụ n'ime laser. N'ọtụtụ oge, laser nwere nnukwu mfu na ọ fọrọ nke nta ka ọ bụrụ enweghị ọkụ ọkụ. N'ime oge dị mkpirikpi nke ukwuu, ibelata mfu nke ngwaọrụ ahụ na-enyere laser aka iwepụta obere usu dị mkpụmkpụ siri ike. Enwere ike nweta lasers fiber na-agbanwe Q na-arụsi ọrụ ike ma ọ bụ na-agafe agafe. Teknụzụ na-arụ ọrụ na-agụnye ịgbakwụnye modulator ike n'ime oghere iji chịkwaa ọnwụ nke laser. Usoro na-agafe agafe na-eji ihe na-eju afọ ma ọ bụ mmetụta ndị ọzọ na-adịghị ahụ anya dị ka ịkpali mgbasa nke Raman na kpaliri Brillouin mgbasa ozi iji mepụta usoro Q-modulation. Mkpụrụ obi ndị a na-emepụtakarị site na ụzọ mgbanwe Q bụ na ọkwa nanosecond. Ọ bụrụ na a ga-emepụta mkpirisi mkpụmkpụ, enwere ike nweta ya site na usoro mkpọchi ọnọdụ.
2. Mode-ekpochi eriri laser: Ọ nwere ike igbanye ultrashort pulses site na-arụsi ọrụ ike mode-mkpọchi ma ọ bụ passive mode-kpọchi ụzọ. N'ihi oge nzaghachi nke modulator, obosara pulse na-emepụta site na mkpọchi ọnọdụ na-arụ ọrụ na-adịkarị na ọkwa picosecond. Mkpọchi ọnọdụ na-agafe agafe na-eji ngwaọrụ mkpọchi ọnọdụ na-agafe agafe, nke nwere oge nzaghachi dị mkpụmkpụ ma nwee ike ịmepụta pulses na nha femtosecond.
Nke a bụ mmeghe nkenke maka ụkpụrụ nke mkpochi ebu.
Enwere ọtụtụ ụdị ogologo ogologo n'ime oghere laser resonant. Maka oghere yiri mgbanaka, oge etiti oge nke ụdị ogologo ogologo ha nhata / CCL, ebe C bụ ọsọ nke ọkụ na CL bụ ogologo ụzọ anya nke ìhè mgbama na-eme njem otu gburugburu n'ime oghere ahụ. N'ikwu okwu n'ozuzu, uru bandwit nke fiber lasers dị nnọọ ukwuu, na ọnụ ọgụgụ dị ukwuu nke longitudinal modes na-arụ ọrụ n'otu oge. Ngụkọta ọnụọgụ ụdịdị nke laser nwere ike ịnabata na-adabere na etiti ọnọdụ ogologo ogologo ∆ν na uru bandwit nke ọkara uru. Ka obere oge ọnọdụ ogologo oge, na-abawanye uru bandwidth nke ọkara, na ụdị ogologo ogologo nwere ike ịkwado. N'aka nke ọzọ, obere.
3. Quasi-continuous laser (QCW laser): Ọ bụ ọnọdụ ọrụ pụrụ iche n'etiti laser na-efe efe na-aga n'ihu (CW) na lasers pulsed. Ọ na-enweta ike dị elu ozugbo site na mkpịrịsị ogologo oge (okirikiri ọrụ na-abụkarị ≤1%) ebe ọ na-ejigide ike nkezi dị obere. Ọ na-ejikọta nkwụsi ike nke lasers na-aga n'ihu na uru kachasị elu nke laser pulsed.
Ụkpụrụ nka nka: QCW lasers na-ebu modul modulation modul na-aga n'ihulasersekit iji bee na-aga n'ihu lasers n'ime elu ọrụ okirikiri usu usoro, ọbọ mgbanwe mgbanwe n'etiti na-aga n'ihu na pulse ụdịdị. Akụkụ bụ isi ya bụ usoro "mgbawa obere oge, oyi dị ogologo oge". Ihe dị jụụ na oghere pulse na-ebelata mkpokọta okpomọkụ ma na-ebelata ihe ize ndụ nke nrụrụ ihe ọkụkụ.
Uru na atụmatụ: Njikọta abụọ-mode: Ọ na-ejikọta ike kachasị elu nke ọnọdụ pulse (ruo ugboro 10 nkezi ike nke ọnọdụ na-aga n'ihu) na oke arụmọrụ na nkwụsi ike nke ọnọdụ na-aga n'ihu. ;
Oriri ike dị ala: Ntugharị eletrọ-optical dị elu yana ọnụ ahịa ojiji ogologo oge dị ala. ;
Ogo beam: Ogo elu nke eriri fiber lasers na-akwado micro-machining ziri ezi.
Oge nzipu: Nov-10-2025