Ntụgharị ụkpụrụ nke Tunable semiconductor laser (Tunable laser)

Ntụgharị ụkpụrụ nkeSemiconductor laser a na-emegharị emegharị(Laser na-atụgharị)

Laser semiconductor Tunable bụ ụdị laser nke nwere ike na-agbanwe ogologo oge nke mmepụta laser n'otu ebe. Laser semiconductor a na-emegharị emegharị na-eji ntugharị ọkụ, nlegharị anya eletriki na nzigharị igwe iji dozie ogologo oghere, ụdị nlegharị anya grating, usoro na mgbanwe ndị ọzọ iji nweta nlegharị anya ogologo ogologo. Ụdị laser a nwere ngwa dịgasị iche iche na nkwurịta okwu anya, spectroscopy, sensing, ọgwụ na mpaghara ndị ọzọ. Onyonyo 1 na-egosi ihe mejupụtara nke alaser tunable, gụnyere nkeji uru ọkụ, oghere FP mejupụtara enyo ihu na azụ, yana otu nzacha nhọrọ ngwa anya mode. N'ikpeazụ, site n'ịgbanwe ogologo nke oghere ntụgharị uche, nzacha ọnọdụ anya nwere ike iru mmepụta nhọrọ wavelength.

FIG.1

Usoro ọgwụgwọ na ihe kpatara ya

The n'iji ya gee ntị ụkpụrụ nke tunablesemiconductor laserstumadi dabere na-agbanwe agbanwe anụ ahụ parameters nke laser resonator iji nweta na-aga n'ihu ma ọ bụ pụrụ iche mgbanwe na mmepụta laser wavelength. Paragraf ndị a gụnyere, mana ọnweghị oke na, ndetu ntugharị, ogologo oghere, na nhọrọ ọnọdụ. Ihe ndị a na-akọwa ọtụtụ usoro nlegharị anya nkịtị na ụkpụrụ ha:

1. Nlegharị anya ntụtụ nke ụgbọelu

Ntugharị ịgba ntụtụ nke ụgbọelu bụ ịgbanwe ihe ntugharị refractive nke ihe ahụ site n'ịgbanwe nke a na-agbanye ugbu a n'ime mpaghara na-arụ ọrụ nke laser semiconductor, iji nweta ngbanwe ogologo ogologo. Mgbe ihe dị ugbu a na-abawanye, ntinye uche nke onye na-ebu na mpaghara na-arụ ọrụ na-abawanye, na-ebute mgbanwe na ntinye aka na-emegharị, nke na-emetụta ogologo oge laser.

2. Thermal n'iji ya gee ntị Thermal n'iji ya gee ntị bụ ịgbanwe refractive index na oghere ogologo nke ihe site na-agbanwe na-arụ ọrụ okpomọkụ nke laser, nke mere iji nweta wavelength n'iji ya gee ntị. Mgbanwe na okpomọkụ na-emetụta index refractive na nha anụ ahụ nke ihe.

3. Mechanical n'iji ya gee ntị Mechanical n'iji ya gee ntị bụ iji nweta wavelength n'iji ya gee ntị site na-agbanwe ọnọdụ ma ọ bụ Angle nke mpụga ngwa anya ọcha nke laser. Ụzọ nzigharị igwe a na-ahụkarị gụnyere ịgbanwe akụkụ nke grating diffraction na ịkwagharị ọnọdụ enyo.

4 Electro-optical tuning na-enweta nzigharị electro-optical tuning site n'itinye oghere eletrik na ihe semiconductor iji gbanwee ndezigharị ntugharị nke ihe ahụ, si otú a na-enweta ntuzigharị wavelength. A na-ejikarị usoro a eme ihe naelectro-optical modulators (EOM) na lasers eletrọnị anya.

Na nchịkọta, ụkpụrụ nzigharị nke laser semiconductor laser na-achọpụta nlegharị anya ogologo ogologo site na ịgbanwe akụkụ anụ ahụ nke resonator. Paragraf ndị a gụnyere ndenye nrụgharị, ogologo oghere, na nhọrọ ọnọdụ. Ụzọ nlegharị anya akọwapụtara nke ọma gụnyere nlegharị anya ịgba ntụtụ ụgbọelu, ntugharị ọkụ, nzigharị igwe na nlegharị anya eletrọ-optical. Usoro nke ọ bụla nwere usoro anụ ahụ nke ya na ntinye mgbakọ na mwepụ nke ya, na nhọrọ nke usoro nlegharị anya kwesịrị ekwesị kwesịrị ka a tụle ya dị ka ihe ngwa ngwa chọrọ, dị ka nhazi ntugharị, ọsọ ọsọ, mkpebi na nkwụsi ike.