[en] As part of their research into the basic optical properties of laser glasses, the authors measured the two-photon absorption (2PA) coefficient β of some highly transparent oxide glasses. The authors tested several alkali silicate compositions (LG-650, LG-660, LG-670, and LSG-91H), several borosilicates (BK-3, BK-7, and BK-10), and one phosphate (LG-750)
Rufer, M.L.; Murphy, P.W. (eds.); Lawrence Livermore National Lab., CA (USA); p. 6.48-6.49; Jun 1985; p. 6.48-6.49; Available from NTIS, PC A21/MF A01; 1 as DE86005297