Chinese Physics - Chin. Phys. B

Download PDF
3 downloads 0 Views 208KB Size Report
Comment
the external electromagnetic field[12-14] in an atomic system, Harris and co-workers have discussed the dis- persive properties and predicted a reduction in the.
     





  !



  

  

"# $% & ' ()#

    

                 



¦¨¥ §¤£

   





«ª  ¡¢©

     



Ý

                               !   "#              

 

                           !  ! ! "                        # $     "        %  & !      !            !     '  # $       ( ) * )        '*+## $                (     #



     

$%&' ()$' *  +   "  " #    ""  # ," "  " "   ""   -  " !  # #  -" . / "       " "  "    " !  -"  / . /  0#     " -"     "#  "  ! "   " " "   !".     " !   "" 0  " "  #     . / "  "1"    " #  "# 0 "  # ! 2 " #  !     ""  "#  "   " !   "#  #    0 " " # # # #  1.   " "  "    !     ""     + "   -1 #  . 3"  " " !       "" " 1 #      #,    " +. *  "   !"   " !   2 -"   -#  1 3   .  4  3"       "1" "  " ""     "1" "  #   " #" "  0" " !.    " " "   !"   "     ##   /   " ! " # "! . 51 "-  "- "   "#1

! "#" 

 " " #         "       ! " -  # .  * " !  1 # #1    # 1     !  !   ""   "    0     ""  ! 6 "      !"    1     "  1   " .7 . /    ##"   "#"- # #"    "#1 -    -    - -.   "    

 - "1" " !    "  1   0   ,       "1" 3"   ! 8" - """   " #"- # #"  #        # - 1   #" #   . 4   0 #  "        #" # #   - 1  7( 9".  /  " ## !    "#"- # # "   "#1         # - 1   "1   # "     ! " " " !  .7.  7 " !"   "         "    ". *  ""    " 

£ ,-    .  . /  0    1  ) . 2+  3245    6 , 0    7    8  9   1  ) .  4# Ý   !        #

$%%&&&' ' %( %

23

/ :;

 !  # !"   # 1               " !   1   . -" %  )   2 1   1 "         " 

 -1 1   5 "  - 7. *   "" !   " #  # "    ! " "      . *   " #   "    #1 -1 - 0 !        # -  1. *  " !  # - 1 "   "     "#"            - 0.

 

   ?   :  6     !   =

?  7 ; ?  % ; ?  ) 7 7 :6    ¾½    % ;     % %  

 



 

 

¿½  

 



7 7 ;    ¿½   ) ;    ¿½   7 % % 

;    ¿¾  % ;    ¿¾  ) 



)

@.) ! -    "