In November 2000, Crystal Associates was acquired for an undisclosed cash amount by Coherent Inc., a supplier of laser-based solutions for various markets. Crystal Associates Inc. became part of Coherent's Photonics GroupCrystal Associates Inc manufactures solid state crystals, ultrasonic transducers, UV optical filters and nonlinear optics. Crystal Associates offers contract R&D services in synthesis, growth, precision x-ray orientation, fabrication and optical polishing of materials