Frequency doubling crystals

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867155

Wang, Francis ^[1]; Velsko, Stephan P ^[2]

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1. Danville, CA
2. Livermore, CA

A systematic approach to the production of frequency conversion crystals is described in which a chiral molecule has attached to it a "harmonic generating unit" which contributes to the noncentrosymmetry of the molecule. Certain preferred embodiments of such harmonic generating units include carboxylate, guanadyly and imidazolyl units. Certain preferred crystals include L-arginine fluoride, deuterated L-arginine fluoride, L-arginine chloride monohydrate, L-arginine acetate, dithallium tartrate, ammonium N-acetyl valine, N-acetyl tyrosine and N-acetyl hydroxyproline. Chemical modifications of the chiral molecule, such as deuteration, halogenation and controlled counterion substitution are available to adapt the dispersive properties of a crystal in a particular wavelength region.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by Secetary of (Washington, DC)
• Patent Number(s): US 4876688
• OSTI ID: 867155
• Country of Publication: United States
• Language: English

Related Subjects

frequency
doubling
crystals
systematic
approach
production
conversion
described
chiral
molecule
attached
harmonic
generating
unit
contributes
noncentrosymmetry
preferred
embodiments
units
carboxylate
guanadyly
imidazolyl
l-arginine
fluoride
deuterated
chloride
monohydrate
acetate
dithallium
tartrate
ammonium
n-acetyl
valine
tyrosine
hydroxyproline
chemical
modifications
deuteration
halogenation
controlled
counterion
substitution
available
adapt
dispersive
properties
crystal
particular
wavelength
region
wavelength region
frequency conversion
conversion crystal
preferred embodiments
preferred embodiment
deuterated l-arginine
generating unit
frequency doubling
generating units
chemical modification
doubling crystals
/372/252/359/