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Abstract:
We present a new class of micro lasers based on nanoporous molecular sieve host-guest systems. Organic dye guest molecules of 1-ethyl-4-[4-( p-dimethylaminophenyl)-1,3-butadienyl]-pyridinium Perchlorat were inserted into the 0.73-nm-wide channel pores of a zeolite AlPO4-5 host. The zeolitic microcrystal compounds were hydrothermally synthesized according to a particular host-guest chemical process. The dye molecules are found not only to be aligned along the host channel axis, but to be oriented as well. Single mode laser emission at 687nm was obtained from a whispering gallery mode oscillating in a 8-μm-diameter monolithic microresonator, in which the field is confined by total internal reflection at the natural hexagonal boundaries inside the zeolitic microcrystals.
