Ko te Raupapa BSBK he raina ngaio o ngā Wehewehenga Kurupae Pereti 1064nm i hangaia mai i te karāhe whatu BK7 Grade A kounga teitei. Kua hangaia ēnei whatu hei wehewehe tika i ngā hihi laser e haere mai ana i te koki whakaeke 45° (AOI), e tuku ana i te whakaata pumau 50% (Taha 1) mō te mārama S-polarized. Ahakoa kei te hanga koe i tētahi pūnaha tohu laser matatini, kei te whakatū i tētahi interferometer, kei te hiahia rānei koe i tētahi tauira hihi pono, ka tukuna e te raupapa BSBK te tika me te pakari e hiahiatia ana e koe.