Journal ArticleDOI
Network analysis of the modes of two-dimensional grating-surface-emitting diode laser arrays
TLDR
In this article, the modes and threshold gain characteristics of two-dimensional grating-surface-emitting diode laser arrays that are evanescently coupled in the lateral direction and mutually injection coupled in a longitudinal direction are analyzed.Abstract:
The modes and threshold gain characteristics of two-dimensional grating-surface-emitting diode laser arrays that are evanescently coupled in the lateral direction and mutually injection coupled in the longitudinal direction are analyzed. The ratio of the grating transmissivity to reflectivity is found to be a critical parameter in obtaining uniform power distribution inside the array. Good qualitative agreement between the theory and experimentally measured near-field patterns and threshold currents is obtained. >read more
Citations
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Journal ArticleDOI
Dynamic analysis of radiation and side-mode suppression in a second-order DFB laser using time-domain large-signal traveling wave model
TL;DR: In this paper, a relatively simple algorithm was developed to calculate the large-signal dynamic response of DFB lasers by solving the time-dependent coupled wave equations directly in the time domain.
Journal ArticleDOI
Characteristics of coherent two-dimensional grating surface emitting diode laser arrays during CW operation
Gary A. Evans,D.P. Bour,Nils W. Carlson,Robert Amantea,Jacob M. Hammer,H. Lee,M. Lurie,R.C. Lai,P.F. Pelka,R. E. Farkas,J.B. Kirk,S.K. Liew,W. F. Reichert,C.A. Wang,H.K. Choi,James N. Walpole,Jerome K. Butler,W.F. Ferguson,R. K. DeFreez,Marc K. Felisky +19 more
TL;DR: In this paper, a monolithic two-dimensional coherent grating surface emitting (GSE) laser arrays are presented, which have achieved continuous wave (CW) threshold current densities of under 140 A/cm/sup 2/ with CW differential quantum efficiencies of 20-46% per surface.
Journal ArticleDOI
Mode discrimination in distributed feedback grating surface emitting lasers containing a buried second-order grating
TL;DR: In this paper, the operating characteristics of a novel grating surface emitting laser structure containing a buried second-order grating have been studied both experimentally and theoretically, and the results showed that single mode operation (>30 dB side mode suppression) and single-lobed far fields with negligible sidelobes are observed up to more than 5*I/sub th/ with spectral linewidths as narrow as 1 MHz.
Journal ArticleDOI
Effect of external reflectors on radiation profile of grating coupled surface emitting lasers
TL;DR: In this article, the authors analyzed the spectrum and far field radiation patterns as a function of the injection current and external optical feedback in a grating coupled surface emitting distributed feedback laser and found that asymmetric coating of the facets is preferred by a single lobed far-field radiation pattern.
Journal ArticleDOI
Absolute real-time determination of size and refractive index of individual microspheres
Valeri P. Maltsev,Valeri P. Maltsev,A.V. Chernyshev,A.V. Chernyshev,Konstantin A. Semyanov,Erkki Soini +5 more
TL;DR: In this article, the flying light scattering indicatrix (FLSI) method has been improved by employing a set of empirical equations combined with a decision tree which has been used for simultaneous real-time measurements and calculation of the size and refractive index of individual spherical particles.
References
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Journal ArticleDOI
Coupled‐Wave Theory of Distributed Feedback Lasers
H. Kogelnik,Charles V. Shank +1 more
TL;DR: In this article, an analysis of laser action in a periodic structure is presented, where the resonant frequencies and threshold criteria for the modes of oscillation have been determined for both index and gain periodicities.
Journal ArticleDOI
Second-order distributed feedback lasers with mode selection provided by first-order radiation losses
R.F. Kazarinov,C.H. Henry +1 more
TL;DR: In this article, the effect of radiation losses on the mode selectivity of DFB laser with second-order gratings was studied, and it was shown that interference of the radiation due to first-order diffraction of oppositely propagating guided waves cancels the radiation loss at one of the edges of the spectrum gap.
Journal ArticleDOI
Coupled‐mode analysis of phase‐locked injection laser arrays
TL;DR: In this article, a coupledmode analysis has been developed to describe the output of phase-locked injection laser arrays, showing that an array of emitters with weak coupling can only operate in a set of discrete modes determined by the number and the spacing of the emitters.
Journal ArticleDOI
A model for GRIN-SCH-SQW diode lasers
TL;DR: In this paper, a comprehensive model for graded-index, separate-confinement-heterostructure, singlequantum-well (GRIN-SCH-SQW) Al/sub x/Ga/sub 1-x/As diode lasers is presented, and compared with experimental data.
Journal ArticleDOI
Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides - I
TL;DR: In this paper, a general formulation for arbitrary-shaped gratings which need not be small in size was developed for radiated power from traveling waves as a function of grating tooth height, tooth width, refractive index, waveguide thickness, and period.
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