Related Articles In-well pumping of InGaN/GaN vertical-external-cavity surface-emitting lasers Appl. Phys. Lett. 99, 201109 (2011) Near-field dynamics of broad area diode laser at very high pump levels AIP Advances 1, 042148 (2011) Photonic bandstructure engineering of THz quantum-cascade lasers Appl. Phys. Lett. 99, 201103 (2011) Simulation of quantum cascade lasers J. Appl. Phys. 110, 093109 ...

Related Articles In-well pumping of InGaN/GaN vertical-external-cavity surface-emitting lasers Appl. Phys. Lett. 99, 201109 (2011) Near-field dynamics of broad area diode laser at very high pump levels AIP Advances 1, 042148 (2011) Photonic bandstructure engineering of THz quantum-cascade lasers Appl. Phys. Lett. 99, 201103 (2011) Simulation of quantum cascade lasers J. Appl. Phys. 110, 093109 ...

Abstract: We will examine the waveguide mode losses in ridge-guided quantum cascade lasers. Our analysis illustrates how the low-loss mode for broad-ridge quantum cascade lasers (QCLs) can be a higher-order lateral waveguide mode that maximizes the feedback from the sloped ridge-wall regions. The results are in excellent agreement with the nearand far-field data taken on broad-ridge-guided quan...

A model for the photon noise and the current noise in quantum cascade lasers is presented. It is shown that compared to diode lasers quantum cascade lasers exhibit much less photon-number squeezing even when the noise in the drive current is suppressed well below the shot-noise value. The theoretical model presented in this paper self-consistently accounts for the suppression of the current noi...

Quantum-cascade lasers operating at 4.7, 3.5, and 2.3 THz have been used to achieve cyclotron resonance in InAs and InSb quantum wells from liquid-helium temperatures to room temperature. This represents one of the first spectroscopic applications of terahertz quantum-cascade lasers. Results show that these compact lasers are convenient and reliable sources with adequate power and stability for...

Related Articles Near-field dynamics of broad area diode laser at very high pump levels AIP Advances 1, 042148 (2011) Photonic bandstructure engineering of THz quantum-cascade lasers Appl. Phys. Lett. 99, 201103 (2011) Simulation of quantum cascade lasers J. Appl. Phys. 110, 093109 (2011) Ultra-broadband heterogeneous quantum cascade laser emitting from 2.2 to 3.2 THz Appl. Phys. Lett. 99, 1911...

A comprehensive model for the photon number fluctuations and the current noise in quantum cascade lasers is presented. It is shown that the photon intensity noise in quantum cascade lasers exhibits little amplitude squeezing even when noise in the drive current is suppressed below the shot noise value. This is in contrast to interband semiconductor diode lasers in which the laser intensity nois...

A theoretical model for calculation of the intrinsic linewidth of QCLs is built on the basis of the quantum Langevin approach. It differs from the traditional rate equation model in that the resonant tunneling and the dynamics of coherent interaction can be considered. Results show that the coupling strength and the dephasing rate associated with resonant tunneling strongly affect the linewidth...

We demonstrate that the self-mixing effect in terahertz frequency quantum cascade lasers can be used for three-dimensional coherent imaging; swept-frequency interferometry for imaging and materials analysis; and, high-resolution inverse synthetic aperture radar imaging. OCIS codes: (110.6795) Terahertz imaging; (140.5965) Semiconductor lasers, quantum cascade