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Intra-cavity Terahertz Difference-Frequency Generation in Quantum Cascade Lasers

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Abstract

We demonstrate intra-cavity terahertz difference-frequency generation in quantum cascade lasers. A two-wavelength quantum cascade laser with monolithically integrated optical nonlinearity emitting at 7.6 and 8.7 µm was used to generate difference frequency at 60 µm.

© 2007 Optical Society of America

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