SPIE Proceedings [SPIE International Conference on Lasers, Applications, and Technologies '07 - Minsk, Belarus (Monday 28 May 2007)] International Conference on Lasers, Applications, and Technologies 2007: Environmental Monitoring and Ecological Applications; Optical Sensors in Biological, Chemical, and Engineering Technologies; and Femtosecond Laser Pulse Filamentation - New perspectives in protein-based biosensors: the glucokinase from B. stearothermophilus and the odorant-binding protein from C. familiaris as probes for non-consuming analyte sensors