Abstract
We describe a next-generation monoblock laser capable of a greater than , output at over broad ambient temperature extremes with no active temperature control. The transmitter design is based on a Nd:YAG laser with a passive Q switch and intracavity potassium titanyl phosphate optical parametric oscillator. To achieve the repetition rate and efficiency goals of this effort, but still have wide temperature capability, the slab is end pumped with a 12-bar stack of (each) diode bars. Different techniques for focusing the pump radiation into the end of the slab are compared, including a lensed design, a reflective concentrator, and a lens duct. A wide temperature operation (−20 °C to 50 °C) for each end-pumped configuration is demonstrated.
© 2006 Optical Society of America
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