title: Accumulated programming of a complex spectral grating.
abstract: A complex spectral grating is accumulated by repeated application of a pair of low-power optical programming pulses to a short-term persistent inhomogeneously broadened transition in Tm:YAG at 4.5 K and then probed to investigate the buildup dynamics. The necessary frequency stability is obtained by locking a cw Ti:sapphire laser to a regenerating transient spectral hole in the same transition. Grating accumulation is demonstrated for both a periodic spectral grating, representing a true-time delay, and a complex spectral grating, permitting correlation-based pattern recognition. This work is a step toward demonstrating an optical coherent transient continuously programmed continuous processor.
authors: K D
authors: KD
authors: Merkel
authors: R D
authors: RD
authors: Peters
authors: P B
authors: PB
authors: Sellin
authors: K S
authors: KS
authors: Repasky
authors: W R
authors: WR
authors: Babbitt