Effect of Thermal Annealing Treatment and Defect Analysis on AgGaGeS Single Crystals.

AgGaGeS is a new promising nonlinear-optical crystal for frequency-shifting a 1.064 μm laser into mid-IR. This quaternary compound single crystal has been successfully grown by a modified vertical Bridgman method.

Polycrystal Synthesis, Crystal Growth, Structure, and Optical Properties of AgGaGe S ( n = 2, 3, 4, and 5) Single Crystals for Mid-IR Laser Applications.

AgGaGe S crystal is a series of quaternary nonlinear optical materials for mid-IR laser applications of converting a 1.064 μm pump signal (Nd:YAG laser) to 4-11 μm laser output, but only AgGaGeS has attracted the most attention, remaining the other promising AgGaGe S crystal whose physicochemical properties can be modulated by n value. In this work, AgGaGe S ( n = 2, 3, 4, and 5) polycrystals are synthesized by vapor transport and mechanical oscillation method with different cooling processes.