quantum cascade lasers (QCLs)
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 mode. Predicting a laser’s behav- ior under pulsed ...
8
Theory and design of quantum cascade lasers in (111) n -type Si/SiGe
... Quantum cascade lasers (QCLs) have been developed in a variety of III-V materials systems, although as yet there has been no successful demonstration in group ...
8
Development of Terahertz Frequency Quantum Cascade Lasers for the Applications as Local Oscillators
... Here, we present the fabrication of THz frequency quantum cascade lasers (QCLs) emitting at 3.5 THz, as well as a new and robust integration scheme. The paper is organized as follows. In section 2, ...
13
Silver-based surface plasmon waveguide for terahertz quantum cascade lasers
... Terahertz-frequency quantum cascade lasers (THz QCLs) based on ridge waveguides incorporating silver waveguide layers have been investigated theoretically and experimentally, and compared with ...
14
Optical feedback effects on terahertz quantum cascade lasers: modelling and applications
... (THz) quantum cascade lasers (QCLs) are compact sources of radiation in the 1–5 THz range with significant potential for applications in sensing and ...
14
Planar integrated metasurfaces for highly-collimated terahertz quantum cascade lasers
... frequency quantum cascade lasers (QCLs) with metasurface waveguides that are designed to be spoof surface plasmon (SSP) out-couplers by introducing periodically arranged SSP ...
8
Low Power Consumption Substrate Emitting DFB Quantum Cascade Lasers
... years, quantum cascade lasers (QCLs) have undergone a rapid development and become the most promising source in the mid-infrared frequency region ...
5
Discrete Vernier tuning in terahertz quantum cascade lasers using coupled cavities
... Terahertz-frequency quantum cascade lasers (THz QCLs) are compact solid-state sources of coherent radiation in the 1–5 THz region of the electromagnetic spectrum [1], with output powers in excess of ...
11
Accuracy Improvement of Blood Glucose Measurement System Using Quantum Cascade Lasers
... Recently, the development of quantum cascade lasers (QCLs), which enable the downsizing of mid-infrared spectroscopy systems, has advanced rapidly. Sev- eral groups have reported the application of ...
10
Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings
... frequency quantum cascade lasers (QCLs) have undergone rapid development in performance since their first demonstration, 1 finding potential applica- tion in a number of fields including astronomy, ...
5
High order sideband generation in terahertz quantum cascade lasers
... Quantum Cascade Lasers (QCLs) are powerful intersub- band laser sources operating throughout the mid-infrared (MIR) 1 and terahertz (THz) 2 spectral ...
6
Genetic algorithm applied to the optimization of quantum cascade lasers with second harmonic generation
... of quantum cascade lasers (QCLs), consisting of many alternating layers of quantum wells (QWs) and barriers, enables one to shape the intersub- band transitions occurring in these complex ...
7
Efficient method for transport simulations in quantum cascade lasers
... Quantum cascade lasers (QCLs) are relatively new semiconductor devices [1]-[3]. Nevertheless, they have been successfully used both in scientific research [4-5] and industry applications [6] due to ...
6
Design Optimization for 4.1-THZ Quantum Cascade Lasers
... A challenge associated with terahertz-quantum cascade lasers (THz-QCLs) is to achieve population inversion in a THz inter-subband structure, at room temperature. Due to the small subband energy ...
5
Towards automated design of quantum cascade lasers
... Quantum cascade lasers sQCLsd pioneered by the Lucent group 1 are sophisticated infrared light sources with emission wavelengths that can be tuned by engineering the electronic energy states and wave ...
8
Investigation of thermal effects in quantum-cascade lasers
... Abstract— The development of a thermal model for quantum cascade lasers (QCLs) is presented. The model is used in conjunc- tion with a self-consistent scattering rate calculation of the electron ...
10
A physical model of quantum cascade lasers: Application to GaAs, GaN and SiGe devices
... of quantum cascade lasers (QCLs) for use as a design tool, to interpret experimental results and hence improve un- derstanding of the physical processes occurring inside working devices and as a ...
9
Temperature Dependent High Speed Dynamics of Terahertz Quantum Cascade Lasers
... of quantum wells, superlattices, quantum-cascade lasers, and quantum-well infrared photodetectors from near- to far-infrared and terahertz spectral ...of quantum-cascade ...
9
Self-consistent scattering theory of transport and output characteristics of quantum cascade lasers
... and subband populations in 15-level model of quantum cas- cade structure have been calculated. These results were then used to calculate the current densities and injection efficien- cies in the active laser ...
9
Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas
... a quantum cascade laser emitting in single mode operation in the terahertz frequency range by employing compact, integrated devices based on the interplay between plasmonic antenna arrays and monolayer ...
17