Low-threshold-current operation of membrane distributed-feedback laser with surface grating bonded on Si substrate

Y. Atsuji, K. Doi, T. Hiratani, D. Inoue, J. Lee, Y. Atsumi, T. Amemiya, N. Nishiyama, S. Arai, Japanese Journal of Applied Physics, Vol. 54, No. 8, 080301.