Kedu ihe bụ laser dị warara nke nwere obosara ahịrị?

Gịnị bụ alaser dị warara obosara ahịrị?

Laser dị warara, Okwu ahụ bụ "obosara ahịrị" na-ezo aka na obosara ahịrị spectral nkelaserna ngalaba ugboro ugboro, nke a na-ahụkarị n'ihe gbasara ọkara oke obosara zuru oke nke spectrum (FWHM). Ihe na-emetụta obosara ahịrị bụ radieshon nke atọm ma ọ bụ ion ndị a na-akpali akpali, mkpọtụ nke usoro, mkpọtụ igwe nke resonator, mkpọtụ okpomọkụ na ihe ndị ọzọ dị n'èzí. Ka uru nke obosara ahịrị dị obere, otú ahụ ka ịdị ọcha nke spectrum dị elu, ya bụ, ka monochromatic nke laser ka mma. Laser ndị nwere àgwà ndị dị otú ahụ na-enwekarị obere mkpọtụ nke usoro ma ọ bụ ugboro ugboro na obere mkpọtụ ike dịtụ. N'otu oge ahụ, ka uru obosara ahịrị nke laser dị obere, otú ahụ ka njikọ kwekọrọ si sie ike, nke a na-egosipụta dị ka ogologo njikọ dị ogologo.

Nghọta na itinye laser dị warara n'ọrụ

N'ihi oke nha nhata nke ihe na-arụ ọrụ nke laser ahụ, ọ fọrọ nke nta ka ọ ghara ikwe omume ịchọpụta mmepụta nke laser obosara dị warara site na ịdabere na oscillator ọdịnala n'onwe ya. Iji mezuo ọrụ nke laser obosara dị warara, ọ na-adịkarị mkpa iji nzacha, grating na ngwaọrụ ndị ọzọ iji belata ma ọ bụ họrọ modulus ogologo na spectrum gain, mee ka ọdịiche uru dị n'etiti ụdị longitarian dịkwuo elu, ka e wee nwee ole na ole ma ọ bụ ọbụna otu oscillation ụdị longitudinal na resonator laser. N'ime usoro a, ọ dị mkpa ijikwa mmetụta nke mkpọtụ na mmepụta laser, ma belata mgbasa nke ahịrị spectral nke mgbanwe mkpọtụ na okpomọkụ nke gburugburu ebe obibi mpụga kpatara; N'otu oge ahụ, enwere ike ijikọ ya na nyocha nke njupụta spectral nke usoro ma ọ bụ ugboro ugboro iji ghọta isi iyi nke mkpọtụ ma melite nhazi nke laser ahụ, ka e wee nweta mmepụta kwụsiri ike nke laser obosara dị warara.

Ka anyị leba anya n'otú e si arụ ọrụ dị warara nke ọtụtụ ụdị laser dị iche iche.

(1)Laser semiconductor

Laser semiconductor nwere uru dị ka obere nha, arụmọrụ dị elu, ogologo ndụ na uru akụ na ụba.

Ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe dị n'ime Fabry-Perot (FP) rụọ ọrụ.laser semiconductorỌ na-agbagharịkarị n'ụdị ogologo dị iche iche, obosara ahịrị mmepụta dịkwa obosara, yabụ ọ dị mkpa ịbawanye nzaghachi anya iji nweta mmepụta nke obosara ahịrị dị warara.

Nzaghachi Kesara (DFB Laser) na Distributed Bragg reflection (DBR) bụ laser semiconductor nzaghachi anya abụọ a na-ahụkarị n'ime. N'ihi obere oghere grating na nhọrọ ogologo ebili mmiri dị mma, ọ dị mfe inweta mmepụta obosara ahịrị dị warara nke otu ugboro kwụsiri ike. Isi ihe dị iche n'etiti nhazi abụọ ahụ bụ ọnọdụ nke grating: nhazi laser DFB na-ekesakarị nhazi oge nke Bragg grating n'ofe resonator ahụ, resonator nke DBR na-abụkarị nke nhazi grating reflection na mpaghara uru ejikọtara na elu njedebe. Na mgbakwunye, laser DFB na-eji gratings agbakwunyere nwere obere ọdịiche index refractive na obere reflective. Laser DBR na-eji gratings elu nwere nnukwu refractive index conversion na nnukwu reflective. Nhazi abụọ ahụ nwere nnukwu spectral spectral ma nwee ike ịrụ nhazi ogologo ebili na-enweghị mwụda mode na oke nanometers ole na ole, ebe laser DBR nwere oke nhazi sara mbara karịaLaser DFBTinyere nke ahụ, teknụzụ nzaghachi anya oghere dị n'èzí, nke na-eji ihe anya mpụga iji meghachi omume na ìhè na-apụ apụ nke chip laser semiconductor ma họrọ ugboro ole, nwekwara ike ime ka ọrụ laser semiconductor dị warara rụọ ọrụ.

(2) Eriri laser

Igwe laser eriri nwere arụmọrụ mgbanwe mgbapụta dị elu, ezigbo mma nke ìhè na arụmọrụ njikọ dị elu, nke bụ isiokwu nyocha na-ekpo ọkụ n'ọhịa laser. N'ihe gbasara oge ozi, eriri laser nwere ezigbo ndakọrịta na sistemụ nkwukọrịta eriri anya dị ugbu a n'ahịa. Igwe laser eriri otu ugboro nwere uru nke obosara ahịrị dị warara, obere mkpọtụ na ịdị n'otu aghọọla otu n'ime ntụziaka dị mkpa maka mmepe ya.

Ọrụ otu ụdị ogologo oge bụ isi ihe dị na laser eriri iji nweta mmepụta dị warara-obosara ahịrị, dịka usoro nke resonator nke laser eriri ugboro ugboro si dị, enwere ike kewaa ya n'ụdị DFB, ụdị DBR na ụdị mgbanaka. N'ime ha, ụkpụrụ ọrụ nke DFB Laser na DBR fiber laser otu ugboro yiri nke DFB na DBR semiconductor lasers.

(3)Laser steeti siri ike

Na 1960, laser ruby ​​mbụ n'ụwa bụ laser siri ike, nke a na-eji ike mmepụta dị elu na mkpuchi ogologo obosara obosara mara. Nhazi oghere pụrụ iche nke laser siri ike na-eme ka ọ dịkwuo mfe n'ịmepụta mmepụta obosara ahịrị dị warara. Ugbu a, ụzọ ndị bụ isi e tinyere gụnyere usoro oghere dị mkpụmkpụ, usoro oghere mgbanaka otu ụzọ, usoro ọkọlọtọ intracavity, usoro oghere torsion pendulum, usoro nhazi Bragg grating olu na usoro ntinye mkpụrụ.