Journal ArticleDOI
Coupling coefficient of gain-guided lasers
TLDR
An analytical model is presented for the coupling coefficient for two gain-guided coupled waveguides, e.g., semiconductor laser arrays, and the dependence of the coefficient of various waveguide parameters is described.Abstract:
An analytical model is presented for the coupling coefficient for two gain-guided coupled waveguides, e.g., semiconductor laser arrays. A common parabolic gain distribution is assumed for the lasers, and the effective dielectric constant distribution is approximated in terms of the bulk refraction index, wavelength, power filling factor, and the antiguiding factor. The fundamental mode is then formulated and used in an integral for the coupling coefficient. The dependence of the coefficient of various waveguide parameters is described.read more
Citations
More filters
Journal ArticleDOI
Linewidth broadening factor in semiconductor lasers--An overview
Marek Osinski,J. Buus +1 more
TL;DR: In this article, the authors present an overview of topics related to one of the fundamental parameters for semiconductor lasers-the linewidth broadening factor α that describes the coupling between carrier-concentration-induced variations of real and imaginary parts of susceptibility.
Journal ArticleDOI
Stability results for in-phase and splay-phase states of solid-state laser arrays
Abstract: We present a theoretical study of synchronization in N-element solid-state laser arrays. We carry out the linear stability analysis for three types of solution: the nonlasing state, the in-phase periodic state, and the splayphase state. Both nearest-neighbor (on a ring) coupling and global (all-to-all) coupling are treated; the system symmetries enable us to solve the linear stability problem for arbitrary N. We consider the general case in which the coupling coefficient iκ is complex and find that stability depends crucially on the sign of the imaginary part of κ. In the case of global coupling, we discover a surprising result: the existence of an N − 2 parameter family of frequency-locked neutrally stable states. These states should display substantial phase diffusion in the presence of noise.
Journal ArticleDOI
Modulation of Coherently Coupled Phased Photonic Crystal Vertical Cavity Laser Arrays
Stewart T. M. Fryslie,Zihe Gao,Harshil Dave,Bradley J. Thompson,Katherine Lakomy,Shiyun Lin,Patrick J. Decker,David K. McElfresh,Jose E. Schutt-Aine,Kent D. Choquette +9 more
TL;DR: In this paper, the modulation properties of two-element photonic crystal ion-implanted coherently coupled vertical cavity surface emitting laser arrays emitting at 850 nm are reported, where the phase detuning and injection ratio between array elements are critical parameters influencing modulation bandwidth.
Journal ArticleDOI
Direct analysis of gain-guided phase-locked semiconductor laser arrays
W. Marshall,Joseph Katz +1 more
TL;DR: In this paper, a method for analyzing arbitrary one-dimensional waveguides is described and applied to find the lateral modes of gain-guided laser arrays directly, without the need for a coupled-mode approximation.
Journal ArticleDOI
Transverse modes of gain‐guided coupled‐stripe lasers: External cavity control of the emitter spacing
John E. Epler,Nick Holonyak,Robert D. Burnham,Thomas L. Paoli,Robert L. Thornton,M. M. Blouke +5 more
TL;DR: In this article, the dispersion relation of the transverse modes of gain-guided coupled-stripe laser diodes is determined by means of an external grating cavity.
References
More filters
Journal ArticleDOI
Coupled-mode theory for guided-wave optics
TL;DR: In this article, the problem of propagation and interaction of optical radiation in dielectric waveguides is cast in the coupled-mode formalism, which is useful for treating problems involving energy exchange between modes.
Journal ArticleDOI
Optical analysis of multiple-quantum-well lasers
Journal ArticleDOI
Application of the equivalent-index method to DH diode lasers
W. Streifer,Eli Kapon +1 more
TL;DR: The equivalent-index method appears to be especially appropriate in highly asymmetric situations such as exist in the GaAs diode laser, and is illustrated in Fig. 1, wherein the squared refractive index is a function of y in each region.
Journal ArticleDOI
Symmetrical and asymmetrical waveguiding in very narrow conducting stripe lasers
TL;DR: In this paper, the authors show that the measured very narrow stripe laser far-field radiation patterns can only occur if the real refractive index is significantly depressed in the region of maximum gain; that is, substantial antiguidance must be present.
Journal ArticleDOI
Non‐Gaussian fundamental mode patterns in narrow‐stripe‐geometry lasers
TL;DR: In this paper, near and far field patterns of narrow (⩽10 μm) stripe-geometry lasers are reported which differ significantly from the Gaussian patterns predicted and observed in wider-stripe lasers.
Related Papers (5)
Supermode analysis of phase-locked arrays of semiconductor lasers
E. Kapon,Joseph Katz,Amnon Yariv +2 more