Ultrashort pulses are shaped by reflection from dynamic volume holograms recorded in azo-dye-doped epoxies. The spectral resolution and controllability of the reflection geometry are optimal for this application.
We describe an experimental system that programs three-dimensional optical fields to 200-fs resolution over a 10-ps window by using photorefractive volume reflection holograms in lithium niobate. These pulsed images are detected with an imaging interferometric cross correlator.
Strong scattering in broad spatial bandwidth reflection holograms is analyzed by using numerical techniques. Transfer functions and impulse responses for various index modulations are found, and techniques for constructing holograms for optical pulse shaping, coding, and dispersion compensation are discussed.
We consider optical interferometric cross correlators based on broadband light sources. We derive the signal-to-noise ratio from basic principles and supply experimental evidence that corroborates the theoretical analysis. Noise sources are discussed, and the signal-to-noise ratio of our experimental system is measured.
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