


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
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
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

kim
. 





1. 


       
 gian .  
       v n. 


     
-


 
 [4-

nanotube [6], etc.
       
t -10]






1
ThS, T
2

laser B        -     
Kretschmann





2. 
2.1. 
                 
(surface plasmon - 
 - - 

              


- 




[8, 10]







  [1]
m


                
 z - .
z

00
exp{ / }
z
V V z z  
, (1)
V
0

0

-




 
2.2




           z   

0
22
/
0
2
( ) ( )
2
zz
z
d
V e z E z
m dz


    


, (2)
E

z
z 

 
V-potential.
00
2V z z V
, (3)

     V-z   V  

1/3
00
2
0
4
2
z
z m E V
xz
z








, (4)



( ) ( ) 0x x x



. (5)



 
( ) onst.Aix C x


, (6)
z=
z=0

 

1/3
00
2
0
4
2
z
n
z m E V
E Ai

z









. (7)

V (V-potential)  

 V-  

V-

V-



-



-
parabol




-

3. 


 
evanescent plasmon




z 
-
V-potential.
 
      

. 
z x, y


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OPTICAL TRAPPING COLD NEUTRAL ATOMS BASED ON SURFACE
PLASMON MODES
Nguyen Thi Phuong Lan, Do Chi Nghia, Nguyen Ai Viet
Abstract
In this paper, we present a schema of trapping cold atoms based on the surface plasmon
modes. These plasmon modes can be created when a Bessel beam light is totally reflected
internally at the planar dielectric substrate on which a thin metallic film has been deposited.
By evanescent plasmon modes, the wave decays away from the thin film producing an
attractive optical potential for trapping neutral atom. We consider some possible boundary
conditions leading to the non-trivial bound state solution in the z-direction perpendicular to
the surface plane. Our model could be comparable with some recent trapping models.