Abstract
Intracavity second-harmonic generation of a diode-pumped ring laser oscillating on the σ-polarized transition with a temperature-tuned periodically poled (ppKTP) crystal is reported, yielding up to tunable single-frequency output. Evidence of self-mode-locking via cascading nonlinearities is observed when the ppKTP is strongly phase mismatched.
© 2007 Optical Society of America
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