Patent ID: 11947104
Assignee: KOREA BASIC SCIENCE INSTITUTE
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 9:
10. The apparatus of claim 9, wherein a height h from the point with the lowest step to the point with the highest step on the spiral phase plate is determined through Equation below,, h
     =
     
      
       n
       ⁢
       λ
      
      
       2
       ⁢
       cos
       ⁢
       θ
      
     
    
   
   
    
     (
     Equation
     )
    
   
  
 

(h: an overall step height of a spiral phase plate, n: a topological quantum number, λ: a wavelength of an incident beam, θ: an incidence angle of an incident beam with respect to a spiral phase plate).