Laser acha anụnụ anụnụ nke nwere ike dị elu nke 457nm

457nm ike dị elu otu ugborolaser acha anụnụ anụnụ
Nhazi ụzọ anya nke laser acha anụnụ anụnụ nke nwere ike dị elu nke 457nm nwere otu ugboro ugboro
Isi iyi mgbapụta eji bụ usoro diode laser fiber-coupled 30 W. Nke abụọ, a na-ahọrọ resonator mgbanaka maka nhọrọ ụdị. A na-eji kristal vanadate Nd3+-doped yttrium vanadate (Nd:YVO4) nke dị 5 mm ogologo nke nwere mkpokọta 0.1% agbanye ihu njedebe ya. Mgbe ahụ, site na oghere kristal lithium triborate (LBO) nke ụdị I-type phase-matched, a na-emepụta harmonic nke abụọ iji nweta 457nm otu ugboro ike dị elu.lasermmepụta. Mgbe ike mgbapụta ahụ bụ 30 W, ike mmepụta nke laser otu ugboro 457nm bụ 5.43 W, ogologo ebili mmiri etiti bụ 457.06 nm, arụmọrụ mgbanwe ìhè-na-ìhè bụ 18.1%, na nkwụsi ike ike n'ime otu awa bụ 0.464%. Laser 457nm na-arụ ọrụ na ọnọdụ bụ isi n'ime resonator. Ihe ndị na-egosi àgwà ìhè n'akụkụ ntụziaka x na y bụ 1.04 na 1.07 n'otu n'otu, ebe ellipticity nke ntụpọ ìhè bụ 97%.

Nkọwa nke ụzọ anya nke ìhè anụnụ anụnụ dị elulaser otu ugboro
Isi iyi mgbapụta ahụ na-eji eriri anya ejikọtaradiode laser semiconductornhazi nwere ogologo ebili mmiri etiti nke 808 nm, ike mmepụta na-aga n'ihu nke 30 W, na dayameta isi eriri nke 400 μm, yana oghere ọnụọgụgụ nke 0.22.
A na-ejikọta ọkụ mgbapụta ahụ na lensị abụọ dị larịị nke nwere ogologo focal nke 20 mm ma lekwasị anya na ya, wee mee ihe na ya.kristal laserKristal laser ahụ bụ kristal Nd:YVO4 nke dị 3 mm × 3 mm × 5 mm nwere njupụta doping nke 0.1%, yana ihe nkiri 808 nm na 914 nm na-egbochi ntụgharị uche na nsọtụ abụọ ahụ, a na-ejikwa indium foil kpuchie kristal ahụ ma tinye ya na ihe mkpuchi ọla kọpa. Ihe mkpuchi semiconductor na-achịkwa ihe mkpuchi copper ahụ nke ọma site na okpomọkụ ma tinye ya na 15℃.
Resonator bụ oghere mgbanaka enyo anọ nke mejupụtara M1, M2, M3, na M4.
M1 bụ enyo ụgbọelu nwere ihe nkiri mgbochi ntụgharị uche 808 nm, 1064 nm, na 1342 nm (R<0.05%), yana ihe nkiri ntụgharị uche 914 nm (R>99.8%); M4 bụ enyo mmepụta ụgbọelu nwere ihe nkiri ntụgharị uche 914 nm (R>99.8%), ihe nkiri mgbochi ntụgharị uche 457 nm na 1064 nm, ihe nkiri mgbochi ntụgharị uche 1342 nm (R<0.02%); M2 na M3 bụ enyo plano-concave nwere radius curvature nke r = 100 mm, yana ihe nkiri mgbochi ntụgharị uche 1064 nm na 1342 nm (R<0.05%) n'elu ụgbọelu ahụ na ihe nkiri ntụgharị uche 914 nm na 457 nm (R>99.8%) n'elu elu concave.
Efere ọkara-ebili na kristal TGG nke dị n'ime ebe ndọta ahụ nwere ihe nkiri mgbochi ntụgharị uche 914 nm (R<0.02%). Site n'iwebata ngwaọrụ otu ụzọ anya nke mejupụtara TGG na efere ọkara-ebili, a na-amanye laser ahụ ka ọ na-agba ọsọ n'otu ụzọ na resonator mgbanaka, si otú a na-ahụ na laser ahụ na-arụ ọrụ nke ọma n'otu ugboro. FP bụ ihe ọkọlọtọ nwere ọkpụrụkpụ nke 2 mm, yana ngosipụta akụkụ abụọ nke 50%, ọ na-arụkwa mbelata nke abụọ nke ọrụ otu ugboro nke laser ahụ n'ime oghere ahụ. A na-ahọrọ kristal LBO dị ka kristal ugboro abụọ, nke nwere nha nke 3 mm × 3 mm × 15 mm, a na-ekpuchikwa ya na ihe nkiri mgbochi ntụgharị uche 914 nm na 457 nm (R<0.02%), yana nhazi nkebi I-ụdị, akụkụ ịkpụ θ = 90°, φ = 21.9°.