Etching, micro hardness and laser damage threshold studies of a nonlinear optical material L-valineM. Anbuchezhiyan, S. Ponnusamy, C. Muthamizhchelvan, C.C. Kanakam, S.P. Singh, P.K. Pal and P.K. DattaEur. Phys. J. Appl. Phys., 58 1 (2012) 10201DOI: https://doi.org/10.1051/epjap/2012110358