Optical waveguides produced in LiF by MeV ion beam bombardment

Cremona, M.; Pereira, J. A. M.; Pelli, S.; Righini, G. C.
November 2002
Applied Physics Letters;11/25/2002, Vol. 81 Issue 22, p4103
Academic Journal
In this letter, the development of a simple method, based on high-energy light-ion beam irradiation, to create active waveguides in alkali halide materials is reported. A 1.1 MeV He[SUP+] beam at normal incidence was used to irradiate lithium fluoride crystals, with different ion doses varying from 1 × 10[SUP12] up to 6 × 10[SUP15] cm[SUP-2], producing thin colored strips. All strips showed several guided modes, confirming the effectiveness of this technique to create the conditions to allow guided propagation. Values of 1.5 dB/cm were found for the propagation losses.


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