・New window- structure InGaAlP visible light laser diodes by self-selective Zn diffusion-induced disordering, K. Itaya, M. Ishikawa, G. Hatakoshi, Y. Uematsu, IEEE Journal of Quantum Electronics, Vol. 27, No. 6, pp. 1496-1500, 1991

・Short-wavelength InGaAlP visible laser diodes, G. Hatakoshi, K. Itaya, M. Ishikawa, M. Okajima, Y. Uematsu, IEEE Journal of Quantum Electronics, Vol. 27, No. 6, pp. 1476-1482, 1991

・Highly reliable transverse-mode stabilized InGaAlP visible light laser diodes at high-power operation, K. Itaya, M. Ishikawa, K. Nitta, M. Okajima, G. Hatakoshi, Japanese Journal of Applied Physics, Vol. 30, No. 4A, pp. L590-L592, 1991

・The fifth overtone spectra of C-H stretching vibration of C6H5X in nonpolar solvents, K. Itaya, T. Nasu, J. Sakai, M. Katayama, Bulletin of the Chemical Society of Japan, Vol. 64, pp. 837-841, 1991

・Temperature dependence of the threshold current for InGaAlP visible laser diodes, M. Ishikawa, H. Shiozawa, K. Itaya, G. Hatakoshi, Y. Uematsu, IEEE Journal of Quantum Electronics, Vol. 27, No. 1, pp. 23-29, 1991

・636 nm room temperature cw operation by heterobarrier blocking structure InGaAlP laser diodes, K. Itaya, M. Ishikawa, Y. Uematsu, Electronics Letters, Vol. 26, No. 13, pp. 839-840, 1990

・High-power operation of heterobarrier blocking structure InGaAlP visible light laser diodes, K. Itaya, Y. Watanabe, M. Ishikawa, G. Hatakoshi, Y. Uematsu, Applied Physics Letters, Vol. 56, No. 18, pp. 1718-1719, 1990

・High-power cw operation of broad area InGaAlP visible light laser diodes, K. Itaya, G. Hatakoshi, Y. Watanabe, M. Ishikawa, Y. Uematsu, Electronics Letters, Vol. 26, No. 3, pp. 214-215, 1990

・A new transverse- mode stabilized InGaAlP visible light laser diode using p-p isotype heterobarrier blocking, K. Itaya, M. Ishikawa, Y. Watanabe, K. Nitta, G. Hatakoshi, Y. Uematsu, Japanese Journal of Applied Physics, Vol. 27, No. 12, pp. L2414-L2426, 1988

・Effect of facet coating on the reliability of InGaAlP visible light laser diodes, K. Itaya, M. Ishikawa, H. Okuda, Y. Watanabe, K. Nitta, H. Sshiozawa, Y. Uematsu, Applied Physics Letters, Vol. 53, No. 15, pp. 1363-1365, 1988