Modification of the chemical etching behaviour of undoped congruent z-cut lithium niobate single crystals is achieved by pre-illumination of the -z face of the crystal with sub-ps ultraviolet laser radiation at 248 nm, at energy fluences below the threshold for ablation. A systematic study of the effect of the energy fluence and total exposure on the etch frustration is presented.
|Number of pages||3|
|Journal||Applied Physics A: Materials Science and Processing|
|Publication status||Published - Feb 2002|