Fast burning of persistent spectral holes in small laser spots using photon-gated materials
- 23 February 1987
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 50 (8) , 430-432
- https://doi.org/10.1063/1.98164
Abstract
We report extremely fast (30 ns) burning of detectable persistent spectral holes in 200-μm-diam laser spots using a new photon-gated donor-acceptor material: a derivative of zinc-tetrabenzoporphyrin as a donor with chloroform acceptors in a poly(methylmethacrylate) thin film. The fast burning pulse near 630 nm was accompanied by a 200-ms gating pulse at 488 nm to produce the ≂1% deep spectral holes in transmission. This result illustrates one crucial advantage of photon-gated materials over single-photon materials: greatly increased reading fluences can be tolerated, allowing fast burning in small laser spots to be easily detected.Keywords
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