Alexandrite is the leader of a class of tunable solid-state laser materials. Enhanced by several years of research and development, it features a broad wavelength tuning range of 710 - 800 nm with the capability to store and efficiently extract multi-joule pulses of energy. It is one of the most robust solid-state laser materials available with a thermal shock resistance five times that of Nd:YAG. Alexandrite’s unique combination of properties offer application in such areas as dermatology, lithotripsy, spectroscopy, atmospheric lidar, testing of fiber optics and photodetectors, materials processing, pumping of dye lasers, non-linear optics studies and annealing of semiconductors. Structural & Mechanical Properties Formula: Crystal Structure: Unit Cell Dimensions: (contains four formula units) X-Ray Density: Melting Point: Thermal Expansion: Thermal Conductivity: Hardness (Vickers): Young’s Modulus: Fracture Stress: Thermal Shock Resistance:

General Specifications +0.000” / -0.002” 0.005” ± 0.003” @ 45° 55 ± 5 µinches within 5 arc minutes 30 arc-seconds or less within λ / 10 wave at 632 nm wavelength 10 - 5 scratch-dig per MIL-O-13830 A less than 1/2 wave per inch of length (measured at 1 micron) Single-layer MgF2 Single wavelength and broad band anti-reflection coatings available standard range: 0.10 - 0.17 at % special order: < 0.10 or 0.17 - 0.20 at % optimum chrome concentration: 0.83 / d at % (d is laser rod diameter in mm) Diameter Tolerance: Chamfer: Barrel Finish: Perpendicularity: Parallelism: Rod End Face Flatness: Surface...