Wavelength stability in a hybrid photonic crystal laser through controlled nonlinear absorptive heating in the reflector

Andrei P. Bakoz; Alexandros A. Liles; Alfredo A. Gonzalez-Fernandez; Tatiana Habruseva; Changyu Hu; Evgeny A. Viktorov; Stephen P. Hegarty; Liam O'Faolain

doi:10.1038/s41377-018-0043-8

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Wavelength stability in a hybrid photonic crystal laser through controlled nonlinear absorptive heating in the reflector

Original Articles

- Wavelength stability in a hybrid photonic crystal laser through controlled nonlinear absorptive heating in the reflector
- Light: Science & Applications Vol. 7, Issue 5, Pages: 438-444(2018)
- Affiliations：
  
  1.Centre for Advanced Photonics and Process Analysis & Department of Physical Sciences, Cork Institute of Technology, Cork, T12P928, Ireland
  2.Tyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork, T12R5CP, Ireland
  3.School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK
  4.National Research University of Information Technologies, Mechanics and Optics, Saint Petersburg, 199034, Russia
  5.Present address: IMEC, Department of Information Technology (INTEC), Photonics Research Group, Ghent University, Technologiepark-Zwijnaarde 15, 9052, Ghent, Belgium
  6.Present address: National Institute of Astrophysics, Optics and Electronics, 72840 Tonantzintla, Mexico
- Author bio：
  
  Stephen P. Hegarty (stephen.hegarty@cit.ie)
  Liam O'Faolain (liam.ofaolain@tyndall.ie)
- Funds：
- DOI：10.1038/s41377-018-0043-8
  CLC：
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Bakoz, A. P. et al. Wavelength stability in a hybrid photonic crystal laser through controlled nonlinear absorptive heating in the reflector. Light: Science & Applications, 7, 438-444 (2018).
DOI：

Bakoz, A. P. et al. Wavelength stability in a hybrid photonic crystal laser through controlled nonlinear absorptive heating in the reflector. Light: Science & Applications, 7, 438-444 (2018). DOI： 10.1038/s41377-018-0043-8.

摘要

Abstract

The need for miniaturized, fully integrated semiconductor lasers has stimulated significant research efforts into realizing unconventional configurations that can meet the performance requirements of a large spectrum of applications, ranging from communication systems to sensing. We demonstrate a hybrid, silicon photonics-compatible photonic crystal (PhC) laser architecture that can be used to implement cost-effective, high-capacity light sources, with high side-mode suppression ratio and milliwatt output output powers. The emitted wavelength is set and controlled by a silicon PhC cavity-based reflective filter with the gain provided by a Ⅲ-Ⅴ-based reflective semiconductor optical amplifier (RSOA). The high power density in the laser cavity results in a significant enhancement of the nonlinear absorption in silicon in the high ,Q,-factor PhC resonator. The heat generated in this manner creates a tuning effect in the wavelength-selective element, which can be used to offset external temperature fluctuations without the use of active cooling. Our approach is fully compatible with existing fabrication and integration technologies, providing a practical route to integrated lasing in wavelength-sensitive schemes.

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references

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