Browsing by Author "Lin, SAH"

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Exposure schedule for multiplexing holograms in photopolymer
(1999)
Lin, SAH
;
Hsu, KY
;
Chen, WZ
;
Whang, WT
;
光電工程學系
We present dynamics of the grating formation process in phenanthrenequinone- (PQ-) doped poly(methyl methacrylate) (PMMA) photo-polymer. The exposure schedule for multiplexing holograms to achieve equal-strength storage in a single location is described. The analysis method is valid for any saturated media, thus the results can be applied to other photo-polymer materials with similar kinetics.
Optimum conditions for thermal fixing of volume holograms in Fe : LiNbO3
(1999)
Lin, SAH
;
Hsieh, CR
;
Hsieh, TC
;
Hsu, KY
;
光電工程學系
The kinetics of the recording, compensating, and developing processes in two typical thermal fixing procedures (L-H-L and H-L procedures) are analyzed. The optimum condition (in terms of the fixing temperature, compensation time and material parameters) for each fixing procedures are obtained under the boundary condition of short-circuit. Experimental results are shown which are in qualitative agreement with the theory in L-H-L procedure.