Nkọwa nke mmepe laser semiconductor ike dị elu nke akụkụ nke mbụ

Nkọwa nke ike dị elulaser semiconductormmepe akụkụ nke mbụ

Ka arụmọrụ na ike na-aga n'ihu na-aka mma, diode laser (ọkwọ ụgbọala laser diode) ga-anọgide na-anọchi teknụzụ ọdịnala, si otú a na-agbanwe ụzọ e si emepụta ihe ma na-eme ka mmepe nke ihe ọhụrụ dị iche iche. Nghọta nke mmụba dị ukwuu na laser semiconductor ike dị elu dịkwa oke. A gosipụtara mgbanwe nke elektrọn ka ọ bụrụ laser site na semiconductor na mbụ na 1962, ọtụtụ ọganihu ndị ọzọ esorola nke butere nnukwu ọganihu na ntụgharị nke elektrọn ka ọ bụrụ laser na-arụpụta ihe dị elu. Mmepe ndị a akwadola ngwa dị mkpa site na nchekwa anya ruo na netwọk anya ruo ọtụtụ ngalaba ụlọ ọrụ.

Nyocha nke ọganihu ndị a na ọganihu ha na-egosi ike nke mmetụta ka ukwuu na nke sara mbara n'ọtụtụ akụkụ nke akụ na ụba. N'ezie, site na mmezi na-aga n'ihu nke laser semiconductor ike dị elu, mpaghara ojiji ya ga-eme ka mgbasawanye ahụ dịkwuo ngwa ngwa, ma nwee mmetụta dị ukwuu na uto akụ na ụba.

Foto nke 1: Ntụnyere nke ìhè na iwu Moore nke laser semiconductor ike dị elu

lasers siri ike nke e ji diode pumped mee naeriri lasers

Ọganihu dị na laser semiconductor nwere ike dị elu emeela ka e nwee mmepe nke teknụzụ laser dị n'okpuru ala, ebe a na-ejikarị laser semiconductor eme ihe iji kpalite kristal doped (diaode-pumped solid-state lasers) ma ọ bụ eriri doped (fiber lasers).

Ọ bụ ezie na laser semiconductor na-enye ike laser dị irè, obere, na nke dị ọnụ ala, ha nwekwara oke abụọ dị mkpa: ha anaghị echekwa ike, ìhè ha dịkwa oke. N'ụzọ bụ isi, ọtụtụ ngwa chọrọ laser abụọ bara uru; otu bụ iji gbanwee ọkụ eletrik ka ọ bụrụ mwepụ laser, ebe nke ọzọ bụ iji mee ka ìhè nke mwepụ ahụ dịkwuo mma.

Laser siri ike nke a na-akpọ diode pumped.
Na ngwụcha afọ 1980, ojiji nke laser semiconductor iji gbanye lasers siri ike malitere inweta nnukwu mmasị azụmaahịa. Lasers siri ike nke diode pumped (DPSSL) na-ebelata nha na mgbagwoju anya nke sistemụ njikwa okpomọkụ (karịsịa igwe oyi okirikiri) ma nweta modulu, nke ejirila oriọna arc gbanye kristal laser siri ike n'oge gara aga.

A na-ahọrọ ogologo ebili nke laser semiconductor dabere na njikọta nke njirimara nnabata spectral na ihe na-eme ka laser ahụ dị ike, nke nwere ike ibelata ibu okpomọkụ nke ukwuu ma e jiri ya tụnyere ụdị ikuku mgbasa ozi nke oriọna arc. N'ịtụle ewu ewu nke laser neodymium-doped na-ewepụta ogologo ebili 1064nm, laser semiconductor 808nm aghọwo ngwaahịa kachasị arụpụta ihe na mmepụta laser semiconductor ruo ihe karịrị afọ 20.

E mere ka arụmọrụ mgbapụta diode ka mma nke ọgbọ nke abụọ sikwuo ike site na mmụba nke ìhè nke laser semiconductor multi-mode na ikike ime ka obosara ikuku dị warara kwụsie ike site na iji nnukwu Bragg gratings (VBGS) n'etiti afọ 2000. Àgwà nnabata spectral adịghị ike na nke dị warara nke ihe dị ka 880nm akpaliela nnukwu mmasị na diode mgbapụta na-enwu enwu nke nwere spectrally kwụsiri ike. Laser ndị a na-arụ ọrụ nke ọma na-eme ka o kwe omume ịgba neodymium ozugbo na ọkwa laser elu nke 4F3/2, na-ebelata ụkọ quantum ma si otú a na-eme ka mwepụta ụdị isi dị mma na ike nkezi dị elu, nke na-abụghị nke a ga-ejedebe site na lenzi okpomọkụ.

Ka ọ na-erule mmalite afọ iri nke abụọ nke narị afọ a, anyị na-ahụ mmụba ike dị ukwuu na laser 1064nm nke otu-transverse mode, yana laser mgbanwe ugboro ugboro ha na-arụ ọrụ na ogologo oge a na-ahụ anya na ultraviolet. N'ihi ogologo ndụ ike elu nke Nd: YAG na Nd: YVO4, ọrụ DPSSL Q-switched ndị a na-enye ike pulse dị elu na ike kachasị elu, na-eme ka ha dị mma maka nhazi ihe ablative na ngwa micromachining dị elu.