Optical harmonic generator

Patent · 01 January 1985

OSTI ID:865412

Summers, Mark A ^[1]; Eimerl, David ^[2]; Boyd, Robert D ^[1]

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1. Livermore, CA
2. Pleasanton, CA

A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The "extraordinary" or "e" directions of the crystal elements are oriented in the integral assembly to be in quadrature (90.degree.). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude "o" and "e" components. For a third-harmonic generation, the input fundamental wave has "o" and "e" components whose amplitudes are in a ratio of 2:1 ("o":"e" reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10.degree.. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axes ("o").

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4510402
• OSTI ID: 865412
• Country of Publication: United States
• Language: English

Related Subjects

/359/372/
10
90
accomplished
achieved
alternatively
amplitude
amplitudes
angle
arranged
assembly
axes
beam
beam direction
birefringent
components
crystal
crystal elements
degree
direction
directions
elements
elliptically
equal
extraordinary
fixed
form
fundamental
fundamental wave
generation
generator
harmonic
harmonic generation
input
input beam
integral
linearly
linearly polarized
optical
optical harmonic
oriented
output
output wave
pair
phase-matching
polarized
precise
provides
quadrature
ratio
reference
rotating
second-harmonic
sensitive
serially
serially arranged
simply
third
third harmonic
third-harmonic
third-harmonic generation
tilting
tuned
type-ii-type-ii
typical
uniaxial
wave