Journal ArticleDOI
Analysis of semiconductor microcavity lasers using rate equations
Gunnar Björk,Yoshihisa Yamamoto +1 more
Reads0
Chats0
TLDR
In this paper, the rate equations for a microcavity semiconductor laser are solved and the steady-state behavior of the laser and some of its dynamic characteristics are investigated, and it is shown that by manipulating the mode density and the spontaneous decay rates of the cavity modes, the threshold gain can be decreased and the modulation speed can be improved.Abstract:
The rate equations for a microcavity semiconductor laser are solved and the steady-state behavior of the laser and some of its dynamic characteristics are investigated. It is shown that by manipulating the mode density and the spontaneous decay rates of the cavity modes, the threshold gain can be decreased and the modulation speed can be improved. However, in order to fully exploit the possibilities which the modification of the spontaneous decay opens up, the active material volume in the cavity must be smaller than a certain value. Threshold current using different definitions, population inversion factor, L-I curves, linewidth, and modulation response are discussed. >read more
Citations
More filters
Journal ArticleDOI
Terahertz microcavity lasers with subwavelength mode volumes and thresholds in the milliampere range
Yannick Chassagneux,José Palomo,Raffaele Colombelli,Sukhdeep Dhillon,Carlo Sirtori,H. E. Beere,Jesse Alton,David A. Ritchie +7 more
TL;DR: In this article, a double metal waveguide with reduced active core thickness (5.82μm) is used to achieve confinement in the vertical direction, without compromising the laser performances.
Journal ArticleDOI
Cavity Quantum Electrodynamics and Lasing Oscillation in Single Quantum Dot-Photonic Crystal Nanocavity Coupled Systems
TL;DR: In this paper, the authors have shown that a single quantum dot (QD) photonic crystal (PhC) coupled system can achieve spontaneous two-photon emission from a single QD in the strong coupling regime.
Journal ArticleDOI
Low‐threshold operation of hemispherical microcavity single‐quantum‐well lasers at 4 K
Franklin M. Matinaga,Anders Karlsson,Susumu Machida,Yoshihisa Yamamoto,T. Suzuki,Y. Kadota,M. Ikeda +6 more
TL;DR: In this paper, the authors demonstrate low-threshold lasing at 4 K in optically pumped hemispherical In0.2Ga0.8As singlequantum-well microcavities.
Journal ArticleDOI
Spontaneous emission enhancement and saturable absorption of colloidal quantum dots coupled to photonic crystal cavity.
Shilpi Gupta,Edo Waks +1 more
TL;DR: Sp spontaneous emission rate enhancement and saturable absorption of cadmium selenide colloidal quantum dots coupled to a nanobeam photonic crystal cavity are demonstrated and it is demonstrated that the cavity linewidth narrows with increasing pump intensity due to quantum dot saturables absorption.
Journal ArticleDOI
First principles derivation of microcavity semiconductor laser threshold condition and its application to FDTD active cavity modeling
TL;DR: In this paper, a laser threshold condition derived from the instantaneous form of Maxwell's equations is presented, which is particularly amenable to semiconductor microcavity lasers and is compared to the results of active cavity finite-difference time-domain calculations.
References
More filters
Journal ArticleDOI
Electric field dependence of optical absorption near the band gap of quantum-well structures.
David A. B. Miller,Daniel S. Chemla,T. C. Damen,Arthur C. Gossard,W. Wiegmann,Thomas H. Wood,Charles A. Burrus +6 more
TL;DR: Detailed calculations of the shift of exciton peaks are presented including (i) exact solutions for single particles in infinite wells, (ii) tunneling resonance calculations for finite wells, and (iii) variational calculations ofexciton binding energy in a field.
Journal ArticleDOI
Inhibited Spontaneous Emission
TL;DR: The radiative properties of an atom in a cavity differ fundamentally from the atom's radiative property in free space as mentioned in this paper. But the cavity causes slight shifts in the energies of the atom, analogous to radiative shifts.
Journal ArticleDOI
Observation of cavity-enhanced single-atom spontaneous emission
TL;DR: It has been observed that the spontaneous-emission lifetime of Rydberg atoms is shortened by a large ratio when these atoms are crossing a high-Q$ superconducting cavity tuned to resonance with a millimeter-wave transition between adjacent Ryd Berg states as mentioned in this paper.
Journal ArticleDOI
Inhibited spontaneous emission by a Rydberg atom.
TL;DR: Spontaneous radiation by an atom in a Rydberg state is inhibited by use of parallel conducting planes to eliminate the vacuum modes at the transition frequency.