[1] Casperson L W,Tovar A A. J O S A,1998,A15:954.
[2] Casperson L W,Hall D G,Tovar A A.J O S A,1997,A12:3341～3348.
[3] LÜ B D,Ma H.J Mod Opt,1999,46:719～723.
[4] LÜ B D,Zhang B,Ma H.Opt Lett,1999,24:640～643.
[5] LÜ B D,Ma H,Zhang B.Opt Commun,1999,164:165～170.
[6] Strohschein J D,Sequin H J J,Capjack C E.Appl Opt,1998,37:1045～1048.
[7] LÜ B D,Ma H.J O S A,2000,A17:2005～2009.
[8] Sheppard C J R,Saghafi S. Opt Commun,1996,132:144～152.