Úsáidtear an lionsa cosanta léasair go príomha chun lionsa colimating agus lionsa fócasú meaisín ghearrthréimhseacha léasair agus meaisín téamh léasair leasair leasair a chosaint. Tá a raon tonnfhada oibre idir 1000-1100nm, agus is é cumhacht léasair iompair ó 1000W go 20000W.
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