The SLD323XT is a high power, gain-guided laser diode produced by MOCVD method1. Compared to the SLD300 Series, this laser diode has a high brightness output with a doubled optical density which can be achived by QW-SCH structure2. Fine adjustment of the oscillation wavelength is possible by controlling the temperature using the built-in TE cooler (Peltier element). 1 MOCVD: Metal Organic Chemical Vapor Deposition 2 QW-SCH: Quantum Well Separate Confinement Heterostructure Features