Athanasios Gavrielides
Research Subjects
Research Interests
Athanasios Gavrielides has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
- David W. Sukow
Department of Physics and Engineering, Washington and Lee University, 204 W. Washington St., Lexington, Virginia 24450, USA
2 shared publications Benjamin Mooneyham
1 shared publicationGuinevere Burner
1 shared publicationJake Amonette
1 shared publicationJake McKay
1 shared publicationJohn Miller
1 shared publication
Latest Publications
- 19 May 2010
- Published by American Physical Society (APS) in Physical Review E
- Vol. 81 (5) , 056209
Simple and complex square waves in an edge-emitting diode laser with polarization-rotated optical feedback
Numerical and experimental results are presented for an edge-emitting diode laser with delayed optical feedback, where the polarization state of the feedback is rotated such that the natural laser mode is coupled into the orthogonal, unsupported mode. We examine the bifurcation structure and dynamics that give rise to a class of periodic, polarization-modulated solutions, the simplest of which is a square wave solution with a period related to but longer than twice the external cavity roundtrip time. Such solutions typically emerge when the feedback is strong and the differential losses in the normally unsupported polarization mode are small. We also observe more complex waveforms that maintain the same periodicity.
- 19 May 2010
- Published by American Physical Society (APS) in Physical Review E
- Vol. 81 (5) , 056209
Simple and complex square waves in an edge-emitting diode laser with polarization-rotated optical feedback
Numerical and experimental results are presented for an edge-emitting diode laser with delayed optical feedback, where the polarization state of the feedback is rotated such that the natural laser mode is coupled into the orthogonal, unsupported mode. We examine the bifurcation structure and dynamics that give rise to a class of periodic, polarization-modulated solutions, the simplest of which is a square wave solution with a period related to but longer than twice the external cavity roundtrip time. Such solutions typically emerge when the feedback is strong and the differential losses in the normally unsupported polarization mode are small. We also observe more complex waveforms that maintain the same periodicity.
- 25 February 2010
- Published by American Physical Society (APS) in Physical Review E
- Vol. 81 (2) , 025206
Asymmetric square waves in mutually coupled semiconductor lasers with orthogonal optical injection
Two edge-emitting lasers mutually coupled through orthogonal optical injection exhibit square-wave oscillations in their polarization modes. The TE and TM modes within each individual laser are always in antiphase, but the TE mode of one laser leads the TM of the other by the one-way time of flight between lasers. The duty cycle of the square waves is tunable with pump current and coupling strength, while the total period remains close to the roundtrip time. Numerical simulations give similar results and reveal the role of noise in stabilizing the oscillations.
- 25 February 2010
- Published by American Physical Society (APS) in Physical Review E
- Vol. 81 (2) , 025206
Asymmetric square waves in mutually coupled semiconductor lasers with orthogonal optical injection
Two edge-emitting lasers mutually coupled through orthogonal optical injection exhibit square-wave oscillations in their polarization modes. The TE and TM modes within each individual laser are always in antiphase, but the TE mode of one laser leads the TM of the other by the one-way time of flight between lasers. The duty cycle of the square waves is tunable with pump current and coupling strength, while the total period remains close to the roundtrip time. Numerical simulations give similar results and reveal the role of noise in stabilizing the oscillations.