PT-symmetric microring lasers
نویسندگان
چکیده
Mohammad-Ali Miri,* Hossein Hodaei, Matthias Heinrich, Mercedeh Khajavikhan, Demetrios N. Christodoulides CREOL, College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816-2700, USA [email protected] Abstract: We show that a multimode laser cavity when accompanied by an identical but lossy partner can lase at a single longitudinal mode. Our experimental results demonstrate this mode-selective effect in parity-time (PT) symmetric micro-rings lasers. ©2014 Optical Society of America OCIS codes: (140.3570) Lasers, single-mode; (140.3560) Lasers, ring; (140.3410) Laser resonators
منابع مشابه
Single mode PT symmetric large area lasers
We experimentally demonstrate single longitudinal mode operation in microring laser using the concept of PT symmetry. A PT-symmetric coupled resonator arrangement can considerably enhance the maximum achievable gain of single mode microring cavity. The method is broadband thus work well for inhomogenously broadened gain mediums. It doesn’t rely on any additional component to ensure its mode sel...
متن کاملSingle mode lasing in transversely multi-moded PT-symmetric microring resonators
P A P ER Conventional techniques for transverse mode discrimination rely on introducing differential external losses to the different competing mode sets, enforcing single-mode operation at the expense of additional losses to the desirable mode. We show how a parity-time (PT) symmetric design approach can be employed to achieve single mode lasing in transversely multimoded microring resonators....
متن کاملParity-time-symmetric microring lasers.
The ability to control the modes oscillating within a laser resonator is of fundamental importance. In general, the presence of competing modes can be detrimental to beam quality and spectral purity, thus leading to spatial as well as temporal fluctuations in the emitted radiation. We show that by harnessing notions from parity-time (PT) symmetry, stable single-longitudinal mode operation can b...
متن کاملParity-time-symmetric coupled microring lasers operating around an exceptional point.
The behavior of a parity-time-symmetric coupled microring system is studied when operating in the vicinity of an exceptional point. Using the abrupt phase transition around this point, stable single-mode lasing is demonstrated in spectrally multimoded microring arrangements.
متن کاملAn integrated parity-time symmetric wavelength-tunable single-mode microring laser
Mode control in a laser cavity is critical for a stable single-mode operation of a ring laser. In this study we propose and experimentally demonstrate an electrically pumped parity-time (PT)-symmetric microring laser with precise mode control, to achieve wavelength-tunable single-mode lasing with an improved mode suppression ratio. The proposed PT-symmetric laser is implemented based on a photo...
متن کامل