Optical beam generating device

Details Optical beam generating device Optical beam generating device

2011-06-14

2011-06-14

Stultz, Jessica T (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S246000

Reexamination Certificate

active

07961371

ABSTRACT:
The light beam generator1is provided with a laser light source10, an optical phase modulation element15and others. The optical phase modulation element15receives coherent light output from the laser light source10and passed through a beam splitter14to modulate a phase of the light depending on a position on the beam cross section of the light, and outputs the light after the phase modulation to the beam splitter14. A polar coordinate system (r, θ) in which a predetermined position is given as an origin is set on the beam cross section of the light input in the optical phase modulation element15, and when (p+1) domains divided by p (number of pieces) circumferences in which the predetermined position is given as a center are set, of these (p+1) domains, a phase modulation amount φ at each position inside an even numbered domain counted from the inside is expressed by a formula of “φ=qθ”, and a phase modulation amount φ at each position inside an odd numbered domain counted from the inside is expressed by a formula of “φ=qθ+π”.

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