Holmarc’s diode laser module consists of a laser diode along with collimating optics enclosed in a metallic case and a power supply with Automatic Power Control (APC). The laser module has 25mm diameter and 50mm length so that it can be held conveniently in a kinematic or rigid mount. Collimating lens is an aspheric lens with anti-reflection coating. The soft start feature of the power supply assures smooth switch on and long life.