Extremely fast (30 ns) burning of detectable persistent spectral holes in 200 micromter diameter laser spots is reported using a new photon gated donor acceptor material: a derivative of zinc tetrabenzoporphyrin as a donor with chloroform acceptors in a poly (methyl methacrylate) 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: photon gating; frequency domain optical storage; Persistent spectral hole burning; electron transfer; fast burning.
Fast Burning of Persistent Spectral Holes in Small Laser Spots Using Photon-Gated Materials
1986
17 pages
Report
No indication
English
Spectra , Electron acceptors , Benzene compounds , Laser spots , Optics & Lasers , Hole burning , Computer Hardware , Zinc , Frequency , Optical storage , Electron transfer , Chloroform , Polymethyl methacrylate , Zinc compounds , Holes(Openings) , Reading , Photochemical reactions , Disk recording systems , Frequency domain , Porphyrins , Electron donors , Zinc tetrabenzoporphyrin , Thin films
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