Active control of emission directionality of semiconductor microdisk lasers

Abstract

We demonstrate lasing mode selection in nearly circular semiconductor microdisks by shaping the spatial profile of optical pump. Despite of strong mode overlap, adaptive pumping suppresses all lasing modes except the targeted one. Due to slight deformation of the cavity shape and boundary roughness, each lasing mode has distinct emission pattern. By selecting different mode to be the dominant lasing mode, we can switch both the lasing frequency and the output direction. Such tunability by external pump after the laser is fabricated enhances the functionality of semiconductor microcavity lasers.

4 pages, 4 figures

References in corpus (3)

• Combining directional light output and ultralow loss in deformed microdisks
• Chaos-assisted directional light emission from microcavity lasers
• Active subnanometer spectral control of a random laser

Cited by in corpus (25)

• Light fields in complex media: mesoscopic scattering meets wave control
• Complex Lasers with Controllable Coherence
• Effects of non-Hermitian perturbations on Weyl Hamiltonians with arbitrary topological charges
• Anomalous single-mode lasing induced by nonlinearity and the non-Hermitian skin effect
• Wave propagation through disordered media without backscattering and intensity variations
• Supersymetric laser arrays
• Integrated LNOI single-mode lasers by Vernier effect
• Pump-Controlled Modal Interactions in Microdisk Lasers
• All-Optical Adaptive Control of Quantum Cascade Random Lasers
• Sensitivity and spectral control of network lasers
• Steady-state ab-initio laser theory for lasers with fully or nearly degenerate resonator modes
• Controlling mode competition by tailoring the spatial pump distribution in a laser: A resonance-based approach
• Multimode Lasing in Wave-Chaotic Semiconductor Microlasers
• Interaction-induced mode switching in steady-state microlasers
• Origin of emission from square-shaped organic microlasers
• Effects of Laser Polarization and Color on Hybrid Laser Wakefield and Direct Acceleration
• Lorenz-Mie theory for 2D scattering and resonance calculations
• Amplified and directional spontaneous emission from arbitrary composite bodies: self-consistent treatment of Purcell effect below threshold
• All-optical beam steering using the polariton lighthouse effect
• Non-Hermitian gauged laser arrays with localized excitations: Anomalous threshold and generalized principle of selective pumping
• Condensation of Thresholds in Multimode Microlasers
• Dynamical control of square microlaser emission via symmetry classes
• Emergence of exceptional points and their spectroscopic signature in Dirac semimetal-dirty Superconductor heterojunction
• Tracking nanoscale perturbation in active disordered media
• Snapshot hyperspectral imaging of intracellular lasers