Long-wavelength (/spl lambda/=10 /spl mu/m) quadrupolar-shaped GaAs-AlGaAs microlasers

Gianordoli, S.; Hvozdara, L.; Strasser, G.; Schrenk, W.; Faist, Jérôme; Gornik, E.

doi:10.1109/3.831022

Cited by 40 publications

(33 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Various shapes have been studied both experimentally and theoretically: deformed spheres [3,4,5], deformed disks [1,2,4,6,7,8,9,10,11,12], squares [13] and hexagons [14,15]. An efficient numerical strategy to compute optical properties of effectively two-dimensional dielectric cavities with more complex geometries is the subject of the present paper.…”

Section: Introductionmentioning

confidence: 99%

Boundary element method for resonances in dielectric microcavities

Wiersig

2002

J. Opt. A: Pure Appl. Opt.

272

202

View full text Add to dashboard Cite

A boundary element method based on a Green's function technique is introduced to compute resonances with intermediate lifetimes in quasi-two-dimensional dielectric cavities. It can be applied to single or several optical resonators of arbitrary shape, including corners, for both TM and TE polarization. For cavities with symmetries a symmetry reduction is described. The existence of spurious solutions is discussed. The efficiency of the method is demonstrated by calculating resonances in two coupled hexagonal cavities.

show abstract

Section: Introductionmentioning

confidence: 99%

Boundary element method for resonances in dielectric microcavities

Wiersig

2002

J. Opt. A: Pure Appl. Opt.

272

202

View full text Add to dashboard Cite

show abstract

“…By exploiting dry etching techniques sophisticated GaAs QC lasers have been recently produced by the group lead by G. Strasser at the Technical University in Vienna. Among the most important results, it worth mentioning: complex coupled DFB lasers obtained by lithography and ion milling, tuneable coupled cavities and quadrupole microlasers [25,26,27].…”

Section: Laser Fabricationmentioning

confidence: 99%

GaAs Quantum Cascade Lasers: Fundamentals and Performance

Sirtori

2002

Les Lasers : Applications Aux Technologies De l'Information Et Au Traitement Des Matériaux

View full text Add to dashboard Cite

Abstract. Quantum engineering of the electronic energy levels and tailoring of the wavefunctions in GaAs/Al x Ga 1−x As heterostructures allows to obtain the correct matrix elements and scattering rates which enable laser action between subbands. This article reviews the state-of-the-art of GaAs based quantum cascade lasers. These new light sources operate, with peak power in excess of 1 W at 77 K, in the 8-13 µm wavelength region, greatly extending the wavelength range of GaAs optoelectronic technology. Waveguides are based on an Al-free design with an appropriate doping profile which allows optical confinement, low losses and optimal heat dissipation. Finally, new active region designs aiming to improve the laser temperature dependence are discussed. Recent results on these devices confirm that the ratio between the conduction band discontinuity and the photon energy (∆E c /E laser ) is the dominant parameter controlling their thermal characteristic. The maximum operating temperature of these devices is 280 K for lasers with emission wavelength at ∼11 µm.

show abstract

“…Notwithstanding the advantage of electrical pumping capability, microcavities made of semiconductor [5,6,7,8], are rigid under room temperature and thus cannot be changed in shape continuously. In order to have varied shapes, separate cavities with different deformation should be employed.…”

Section: Introductionmentioning

confidence: 99%

Development of a deformation-tunable quadrupolar microcavity

Yang

Moon

Lee

et al. 2006

Review of Scientific Instruments

View full text Add to dashboard Cite

We have developed a technique for realizing a two-dimensional quadrupolar microcavity with its deformation variable from 0% to 20% continuously. We employed a microjet ejected from a noncircular orifice in order to generate a stationary column with modulated quadrupolar deformation in its cross section. Wavelength red shifts of low-order cavity modes due to shape deformation were measured and were found to be in good agreement with the wave calculation for the same deformation, indicating the observed deformation is quadrupolar in nature.

show abstract

Long-wavelength (/spl lambda/=10 /spl mu/m) quadrupolar-shaped GaAs-AlGaAs microlasers

Cited by 40 publications

References 24 publications

Boundary element method for resonances in dielectric microcavities

Boundary element method for resonances in dielectric microcavities

GaAs Quantum Cascade Lasers: Fundamentals and Performance

Development of a deformation-tunable quadrupolar microcavity

Contact Info

Product

Resources

About