The UB Physical Optics Research Group (GROF UB) http://www.ub.edu/optics The UB Physical Optics Research Group web page. Recent publications http://www.ub.edu/optics/publications.html GROF UB: Recent publications. Updated 11/17/2006. Main Page http://www.ub.edu/optics/index211106.html GROF UB: Main page. Updated 11/21/2006. Dynamic Holographic Optical Tweezers http://www.ub.edu/optics/tweezers.html GROF UB: Dynamic Holographic Optical Tweezers task. Spatial Light Modulators and Digital Holography http://www.ub.edu/optics/slm.html GROF UB: Spatial Light Modulators and Digital Holography tasks. Projects ans Contracts http://www.ub.edu/optics/projects.html GROF UB: Projects and contracts. About us http://www.ub.edu/optics/about_us.html GROF UB: About us.