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[PDF] Top 20 A model for a pulsed terahertz quantum cascade laser under optical feedback

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A model for a pulsed terahertz quantum cascade laser under optical feedback

A model for a pulsed terahertz quantum cascade laser under optical feedback

... to laser behavior in a number of complex ways, including altering the refractive index and the physical dimensions of the internal laser cavity [13], which in turn alter the lasing emission ...the ... See full document

18

Model for a pulsed terahertz quantum cascade laser under optical feedback

Model for a pulsed terahertz quantum cascade laser under optical feedback

... detailed model of a BTC THz QCL under optical feedback and pulsed operation, which allows prediction and exploration of lasing dynamics in not only applications relying on ... See full document

17

Optical feedback effects on terahertz quantum cascade lasers: modelling and applications

Optical feedback effects on terahertz quantum cascade lasers: modelling and applications

... RAKIC, Aleksander D., LIM, Yah Leng, TAIMRE, Thomas, AGNEW, Gary, QI, Xiaoqiong, BERTLING, Karl, HAN, She, KUNDU, Iman, GRIER, Andrew, IKONIC, Zoran, VALAVANIS, Alexander, DEMIC, Aleksandar, KEELEY, James, LI, Lianhe H., ... See full document

14

Frequency Tuning Range Control in Pulsed Terahertz Quantum Cascade Lasers: Applications in Interferometry

Frequency Tuning Range Control in Pulsed Terahertz Quantum Cascade Lasers: Applications in Interferometry

... Abstract— Terahertz quantum cascade-lasers (QCLs) are able to produce higher optical output power at higher temperatures when operated in pulsed ...ior under pulsed ... See full document

8

Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser

Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser

... a laser is re-injected into the laser cavity by reflection from a remote ...and laser terminal voltage [13, 14] that depend on both the amplitude and phase of the reflected ...mirror laser ... See full document

7

Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings

Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings

... developed terahertz frequency quantum cascade lasers that exploit a double-periodicity distributed feedback grating to control the emission frequency and the output beam direction ...provide ... See full document

5

Terahertz sensing and imaging using a quantum cascade laser

Terahertz sensing and imaging using a quantum cascade laser

... modulated feedback signal, for the case in which the object was a reflective metallic ...to optical feedback at operating currents near ...the feedback signal using an optical chopper, ... See full document

5

Efficient prediction of terahertz quantum cascade laser dynamics from steady state simulations

Efficient prediction of terahertz quantum cascade laser dynamics from steady state simulations

... peak optical power seen in the measurements ...the laser under various conditions can be determined—for example, to optimize bandwidth for short-range ...Our model predicts a 3 dB modulation ... See full document

6

Coherent three-dimensional terahertz imaging through self-mixing in a quantum cascade laser

Coherent three-dimensional terahertz imaging through self-mixing in a quantum cascade laser

... voltage under feedback from the THz field reflected from the surface of etched semiconductor samples, while the surface is scanned by a mechanical XY ...three-mirror laser model, we can map ... See full document

5

Terahertz Nanoscopy of Plasmonic Resonances with a Quantum Cascade Laser

Terahertz Nanoscopy of Plasmonic Resonances with a Quantum Cascade Laser

... field optical microscope (s-SNOM) based on a quantum cascade laser implemented both as source and detector in a self-mixing scheme utilizing resonant quartz tuning forks as a sensitive ... See full document

9

Infinite-period density-matrix model for terahertz-frequency quantum cascade lasers

Infinite-period density-matrix model for terahertz-frequency quantum cascade lasers

... dinal optical (LO) and acoustic phonons (AP), alloy disorder (AD), interface roughness (IFR), ionized impurities (II) and other electrons ...and quantum mechanical ... See full document

10

Origin of terminal voltage variations due to self mixing in terahertz frequency quantum cascade lasers

Origin of terminal voltage variations due to self mixing in terahertz frequency quantum cascade lasers

... same optical path into the QCL cavity using a planar mirror, forming a nominal external cavity length of 40 ...The feedback also gives rise to changes in the photon and electron density within the ... See full document

10

Broadband terahertz gas spectroscopy through multimode self-mixing in a quantum cascade laser

Broadband terahertz gas spectroscopy through multimode self-mixing in a quantum cascade laser

... self-mixing terahertz-frequency gas spectroscopy technique using a multimode quantum cascade ...double-metal quantum cascade laser device are used increase the optical ... See full document

9

Higher Order Lateral Mode Suppression Schemes for Edge Emitting Terahertz Quantum Cascade Laser Waveguides

Higher Order Lateral Mode Suppression Schemes for Edge Emitting Terahertz Quantum Cascade Laser Waveguides

... characterising optical guided wave ...speed optical modulators, compact bend designs, power splitters, polarization splitters, polarization rotators, polarization controllers, terahertz devices, ... See full document

7

Coherent imaging using laser feedback interferometry with pulsed-mode terahertz quantum cascade lasers

Coherent imaging using laser feedback interferometry with pulsed-mode terahertz quantum cascade lasers

... Laser feedback interferometry, also known as SM interferometry, is a coherent sensing scheme that employs a laser as a homodyne ...transceiver. Laser feedback interferometry relies on ... See full document

13

Terahertz inverse synthetic aperture radar imaging using self-mixing interferometry with a quantum cascade laser

Terahertz inverse synthetic aperture radar imaging using self-mixing interferometry with a quantum cascade laser

... the laser frequency through three external cavity resonances in the region where the laser was most sensitive to optical ...the laser ter- minals after 40 × gain (28dB) with a static ... See full document

5

The study of optical gain for terahertz quantum cascade laser using density matrix method

The study of optical gain for terahertz quantum cascade laser using density matrix method

... From this study, a prediction tool based on density matrix method which enables the computation of the current-voltage (I-V) and optical gain of THz QCL has been successfully developed. Although, the predicted I-V ... See full document

6

Photonic quasi-crystal terahertz lasers

Photonic quasi-crystal terahertz lasers

... device optical properties 8,9 , like in random structures 10 ...a laser cavity to engineer the mode frequency and spacing separately, or to control the emission profile independently of the feedback ... See full document

8

Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas

Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas

... the optical response of the graphene loaded plasmonic antennas and the response of the graphene ...the optical measurements and yield a range in the device conductivity which, even though overestimated, can ... See full document

17

Electron-phonon relaxation rates and optical gain in a quantum cascade laser in a magnetic field

Electron-phonon relaxation rates and optical gain in a quantum cascade laser in a magnetic field

... QCL operation is based on intersubband optical transi- tions, between size-quantized states within the conduction band of multiple quantum well type structures. The excited state lifetimes in such systems ... See full document

6

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