I-laser eluhlaza okwesibhakabhaka enamandla aphezulu angu-457nm

Imvamisa eyodwa enamandla aphezulu angu-457nmi-laser eluhlaza okwesibhakabhaka
Umklamo wendlela yokubona we-laser eluhlaza okwesibhakabhaka enamandla aphezulu angu-457nm enemvamisa eyodwa
Umthombo wephampu osetshenziswayo uyi-array ye-laser diode ehlanganisiwe engu-30 W. Okwesibili, kukhethwa i-ring resonator ukuze kukhethwe imodi. Ubuso bokugcina buphampulwa ngekristalu ye-yttrium vanadate (Nd:YVO4) engu-5 mm ubude ene-concentration engu-0.1%. Bese kuthi, nge-cavity yekristalu ye-lithium triborate (LBO) yohlobo lwe-I, i-harmonic yesibili ikhiqizwe ukuze kufezwe i-457nm high-power single-frequency.i-laserokukhiphayo. Uma amandla ephampu engama-30 W, amandla okukhipha e-laser ye-single-frequency engu-457nm angama-5.43 W, ubude be-wavelength obuphakathi bungama-457.06 nm, ukusebenza kahle kokuguqulwa kokukhanya kube ukukhanya kungu-18.1%, kanti ukuzinza kwamandla kungakapheli ihora eli-1 kungu-0.464%. I-laser engu-457nm isebenza kwimodi eyisisekelo ngaphakathi kwe-resonator. Izici zekhwalithi yokukhanya eziqondisweni ze-x ne-y ziyi-1.04 kanye ne-1.07 ngokulandelana, kanti i-ellipticity yendawo yokukhanya ingu-97%.

Incazelo yendlela yokukhanya yokukhanya okuluhlaza okwesibhakabhaka okunamandla aphezului-laser yemvamisa eyodwa
Umthombo wephampu usebenzisa i-optical fiber-coupledi-diode ye-laser ye-semiconductori-array enobude be-wavelength obuphakathi obungu-808 nm, amandla okukhipha okuqhubekayo angu-30 W, kanye nobubanzi be-fiber core obungu-400 μm, enombobo wezinombolo ongu-0.22.
Isibani sephampu sihlanganiswa futhi sigxilwe ngamalensi amabili e-plano-convex anobude obuqondile obungu-20 mm bese kuba yingozi emkhathini.ikristalu yelasi. Ikristalu yelaser iyikristalu engu-3 mm × 3 mm × 5 mm Nd:YVO4 enezinga lokusebenzisa izidakamizwa elingu-0.1%, enamafilimu okulwa nokukhanya angu-808 nm kanye no-914 nm abekwe kuzo zombili izinhlangothi, futhi ikristalu isongwe nge-indium foil bese ifakwa ku-copper clamping fixture. I-copper clamping fixture ilawulwa kahle yi-semiconductor cooler futhi ibekwe ku-15℃.
I-resonator iyisimbozo sendandatho esinezibuko ezine esakhiwe yi-M1, M2, M3, kanye ne-M4.
I-M1 iyisibuko sendiza esinamafilimu okulwa nokukhanya angu-808 nm, 1064 nm, kanye no-1342 nm (R<0.05%), kanye nefilimu yokubukisa ephelele engu-914 nm (R>99.8%); I-M4 iyisibuko sokuphuma kwendiza esinamafilimu okubukisa ephelele angu-914 nm (R>99.8%), 457 nm kanye no-1064 nm, 1342 nm (R<0.02%); I-M2 kanye ne-M3 zombili ziyizibuko ze-plano-concave ezine-radius egobile engu-r = 100 mm, ezinamafilimu okulwa nokukhanya angu-1064 nm kanye no-1342 nm (R<0.05%) endizeni kanye namafilimu okubukisa ephelele angu-914 nm kanye no-457 nm (R>99.8%) ebusweni obugobile.
Ipuleti le-half-wave kanye nekristalu le-TGG elibekwe ensimini yamagnetic zombili zinamafilimu okulwa nokukhanya angu-914 nm (R<0.02%). Ngokungenisa idivayisi yokubona eqondisa unidirectional eyakhiwe yi-TGG kanye nepuleti le-half-wave, i-laser iphoqeleka ukuthi isebenze iqondisa unidirectional ku-ring resonator, ngaleyo ndlela iqinisekise ukuthi i-laser isebenza kahle esimweni se-single-frequency. I-FP iyisiqephu esijwayelekile esinobukhulu obungu-2 mm, esinokubukeka okuphindwe kabili okungu-50%, futhi senza ukuncishiswa kwesibili kokusebenza kwe-single-frequency kwe-laser emgodini. Ikristalu le-LBO likhethwa njengekristalu eliphindaphinda ukuphindaphinda, elinobukhulu obungu-3 mm × 3 mm × 15 mm, futhi limbozwe ngamafilimu okulwa nokukhanya angu-914 nm kanye no-457 nm (R<0.02%), ngokufanisa isigaba sohlobo lwe-I, i-cutting angle θ = 90°, φ = 21.9°.