论文信息 - Intracavity sum-frequency generation in GaAs quantum cascade lasers

Intracavity sum-frequency generation in GaAs quantum cascade lasers

Emission of coherent light at 5.75 μm wavelength has been obtained by intracavity frequency doubling of a GaAs-based quantum cascade laser. This nonlinearity originates from the second-order susceptibility of the bulk material hosting the heterostructure and can be exploited by growing the quantum cascade laser on a 〈111〉 substrate.

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