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Surface-Emitting Terahertz Quantum-Cascade Laser with 170 mW Output Power in a Single Lobed Beam

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A fourth-order Bragg grating scheme is developed to achieve single-lobed emission and increased radiative efficiencies from surface-emitting semiconductor lasers. Record-high peak output power of 170 mW is demonstrated for a single-mode 3.4 THz quantum-cascade laser at 62 K.

© 2018 The Author(s)

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