Optical Beam Fanning LimiterBased Optical Novelty Filter

• BaTiO3 beam fanning limiter; poled and cut 45o to c-axis

• 4-F optical correlator design

• Small excitation focus with large probe beam

• Photothermal magnitude or image signals

BaTiO3

INFRARED

DETECTOR

SPATIAL

FILTER

SPATIAL

FILTER

DICHROIC

MIRROR

CAMERA

or

DETECTOR

Ar+ LASER

GAS

CELL

TEA

CO2

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