[1] C. Ye, Tunable External Cavity Diode Lasers (World Scientific, Singapore, 2004).
[2] M. de Labachelerie and G. Passedat, Appl. Opt. 32, 269 (1993).
[3] M. Bagley, R. Wyatt, D. J. Elton, H. J. Wickes, P. C. Spurdens, C. P. Seltzer, D. M. Cooper, and W. J. Devlin, Electron. Lett. 26, 267 (1990).
[4] H. Tabuchi and H. Ishikawa, Electron. Lett. 26, 742 (1990).
[5] F. Favre, D. Le Guen, J. C. Simon, and B. Landousies, Electron. Lett. 22, 795 (1986).
[6] F. Favre and D. Le Guen, Electron. Lett. 27, 183 (1991).
[7] L. Levin, Opt. Lett. 27, 237 (2002).
[8] K. Liu and M. G. Littman, Opt. Lett. 6, 117 (1981).
[9] I. Shoshan, N. N. Danon, and U. P. Oppenheim, J. Appl. Phys. 48, 4495 (1977).
[10] M. G. Littman and H. J. Metcalf, Appl. Opt. 17, 2224 (1978).
[11] P. McNicholl and H. J. Metcalf, Appl. Opt. 24, 2757 (1985).
[12] R. P. Salathe, Appl. Phys. 20, 1 (1979).
[13] M. G. Boshier, D. Berkeland, E. A. Hinds, and V. Sandoghdar, Opt. Commun. 85, 355 (1991).
[14] T. Hidaka and T. Nakamoto, Electron. Lett. 25, 1320 (1989).
[15] G. A. Coquin and K. W. Cheung, Electron. Lett. 24, 599 (1988).
[16] J. R. Andrews, Opt. Lett. 16, 732 (1991).
[17] G. Greiner, B. Boggs, T. Wang, and T. W. Mossberg, Opt. Lett. 23, 1280 (1998).
[18] H. A. Macleod, Thin-Film Optical Filters (Institute of Physics, London, 1999).
