Wafer-bonded bottom-emitting 850-nm VCSEL's on GaP substrates Lin, Chao-Kun ; Ryu, Sang-Wan ; Choi, Won-Jin ; Dapkus, P. D. Abstract Publication: IEEE Photonics Technology Letters Pub Date: August 1999 DOI: 10.1109/68.775305 Bibcode: 1999IPTL...11..937L