Tsanangudzo inowanzoshandiswa yemhando yebeam inosanganisira kure-munda nzvimbo radius, kure-munda divergence angle, diffraction muganhu wakawanda U, Strehl ratio, factor M2 , simba on chinangwa chepamusoro kana loop simba reshiyo, nezvimwe.

Beam mhando yakakosha parameter ye laser. Matauriro maviri akajairika emhando yedanda ndeayaBPP uye M2 izvo zvinotorwa zvichibva papfungwa imwechete yemuviri uye zvinogona kushandurwa kubva kune mumwe nemumwe. Laser beam mhando yakakosha nekuti ndiyo kiyi yehuwandu hwemuviri kutonga kuti laser yakanaka here kana kuti kwete uye kuti. the precision processing inogona kuitwa. Kune akawanda marudzi e-single-modhi yekubuda lasers, emhando yepamusoro lasers anowanzo ane yakanyanya kunaka danda mhando, inoenderana nediki kwazvo.M2, senge 1.05 kana 1.1. Zvakare, iyo laser inogona kuchengetedza yakanaka danda mhando muhupenyu hwayo hwesevhisi, uyeM2 kukosha kunenge kusachinja. Ye laser precision machining, mhando yepamusorodanda inonyanya kubatsira pakuumbwa, kuitira kuti uite flat top laser machining pasina kukuvadza iyo substrate uye isina kupisa mhedzisiro. Mukuita,M2 inonyanya kushandiswa kune yakasimba uye gasi lasers, uku BPP inonyanya kushandiswa kune fiber lasers kana ichinyora zvakatemwa zve lasers.

Laser beam quality inowanzo ratidzwa nemaparamita maviri: BPP uye M². M²rinowanzonyorwa se M2. Mufananidzo unotevera unoratidza kureba kwekugoverwa kweGaussian danda, ukoW ndiyo danda chiuno radius uye θ ndiyo hafu yekure-munda yekusiyana angle.

Shanduko yeBPP uye M2

BPP (Beam Parameter Chigadzirwa) inotsanangurwa sewaist radius W yakapetwa ne kure-munda divergence hafu angle θ:

         BPP = W × θ

The kure-munda divergence hafu angle θ yeGaussian beam ndeiyi:

        θ₀ = λ / πW₀

M² ireshiyo yebeam parameter chigadzirwa kune danda paramende chigadzirwa cheiyo yakakosha modhi Gaussian danda:

        M² =（W×θ）/（W₀×θ₀）= BPP /（λ / π）

Hazvina kuoma kuwana kubva pamusoro mafomula kuti BPP yakazvimirira pawavelength, nepo M² zvakare haina hukama nelaser wavelength. Ivo vanonyanya hukama kune dhizaini dhizaini uye kurongeka kwegungano kweiyo laser.

Kukosha kwe M² iri pedyo nekusingaperi kune 1, ichiratidza chiyero pakati pe data chaiyo uye data yakakodzera. Kana iyo chaiyo data iri padyo neakakodzera data, iyo danda mhando iri nani, ndiko kuti, riiniM² iri padyo ne1, iyo inoenderana divergence angle idiki, uye mhando yedanda iri nani.

Kuyera zveBPP uye M2
Beam quality analyzer inogona kushandiswa kuyera mhando yedanda. Beam mhando zvakare inogona kuyerwa nekushandisa mwenje analyzer ine yakaoma kushanda. Dhata inounganidzwa kubva kunzvimbo dzakasiyana dzeiyo laser cross chikamu uye yobva yagadzirwa nechirongwa chekuvaka-mukati kugadzira.M2. M2 haigone kuyerwa kana paine kutadza kushanda kana kuyerwa kukanganisa mukuita sampling. Kune zviyero zvesimba repamusoro, sophisticated attenuation system inodiwa kuchengetedza simba relaser mukati meyero inoyerwa uye kudzivirira chero kukuvadzwa kweiyo chiridzwa chekuona nzvimbo.

Iyo optical fiber core uye manhamba aperture inogona kufungidzirwa zvichienderana nenhamba iri pamusoro. Kune fiber lasers, iyo chiuno radius ω₀= faibha musimboti dhayamita /2 = R, θ = chiviα =α= NA (numerical aperture of fiber).

Pfupiso yeBPP, M2, uye Bem Quality

Iyo diki BPP, iri nani Laser beam quality.

Kwe 1.08µm fiber lasers, M2 = 1, BPP = λ / p = 0.344 mm mrad

Ku10.6µm CO₂ lasers, single basic mode M2 = 1, BPP = 3.38 mm mrad

Tichifunga kuti divergence angles maviri single fundamental mode lasers (kana akawanda-modhi lasers pamwe chete M2) zvakafanana mushure mekutarisa, iyo yakatarisana nedhayamita yeCO₂ Laser ndeye 10 nguva yefiber laser.

The pedyo M2 iri ku1, zviri nani iyo laser beam mhando iri.

Kana laser beam yapinda Gaussian kugovera kana pedyo neGaussian kugovera, iyo iri padyo ne M2 ndeye 1, iyo iri padyo nelaser chaiyo iri kune yakakodzera Gaussian laser, zviri nani kunaka kwedanda.