10 April 1995 Femtosecond optical parametric oscillators (OPOs) at 3 micrometersand beyond: design and performance issues related to crystal properties of KTP and similar materials
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Abstract
Femtosecond optical parametric oscillators (OPO), synchronously pumped by Ti:Sapphire lasers, operating in the near infrared (IR) region are an important light source now under active development. We report the results of our Ti:Sapphire synchronously pumped noncritically phase matched femtosecond OPOs that are based upon several crystals from the KTP family. The newly developed nonlinear crystal niobium doped KTP (Nb:KTP) has a greater birefringence than undoped KTP and is shown to extend the wavelength farther into the mid-IR. We report the first operation of a femtosecond OPO utilizing the solid-solution grown crystal Nb:KTP. Additionally, we show that CTA is very useful in mid-IR angle tuned OPOs.
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Gary R. Holtom, Robert A. Crowell, Lap Kin Cheng, "Femtosecond optical parametric oscillators (OPOs) at 3 micrometersand beyond: design and performance issues related to crystal properties of KTP and similar materials", Proc. SPIE 2379, Solid State Lasers and Nonlinear Crystals, (10 April 1995); doi: 10.1117/12.206500; https://doi.org/10.1117/12.206500
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