Abstract
We investigate the role of self-trapped excitons (STEs) and defects in the formation of femtosecond laser pulse induced nanogratings (NGs) in fused silica. Our experiments reveal strongly enhanced NG formation for pulse separations up to the STE lifetime. In addition, the absorption spectra show that the weaker cumulative action of laser pulses for longer temporal separations is predominantly mediated by dangling-bond-type lattice defects that emerge from decaying STEs.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Feng Liang, Réal Vallée, and See Leang Chin
Opt. Express 20(4) 4389-4396 (2012)
Ye Dai, Guorui Wu, Xian Lin, Guohong Ma, and Jianrong Qiu
Opt. Express 20(16) 18072-18078 (2012)
Feng Liang, Réal Vallée, and See Leang Chin
Opt. Mater. Express 2(7) 900-906 (2012)