Polariton relaxation and polariton nonlinearities in nonresonantly cw-pumped III-nitride slab waveguides
| Autor: | Raphaël Butté, Dmitry Solnyshkov, J.-F. Carlin, Guillaume Malpuech, Joachim Ciers, Y. Kuang, Nicolas Grandjean, Gordon Callsen |
|---|---|
| Přispěvatelé: | Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), ANR-16-CE30-0021,QFL,Fluides Quantiques de Lumière(2016), ANR-16-IDEX-0001,CAP 20-25,CAP 20-25(2016) |
| Rok vydání: | 2020 |
| Předmět: |
bottleneck
room-temperature Exciton Population Physics::Optics 02 engineering and technology amplification 01 natural sciences law.invention stimulated scattering Normal mode law 0103 physical sciences Polariton 010306 general physics education [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] Quantum well Condensed Matter::Quantum Gases Physics [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] education.field_of_study Condensed Matter::Other 021001 nanoscience & nanotechnology Laser Wavelength microcavity Continuous wave Atomic physics 0210 nano-technology lasers |
| Zdroj: | Physical Review B Physical Review B, American Physical Society, 2020, 102 (15), ⟨10.1103/PhysRevB.102.155304⟩ Physical Review B, 2020, 102 (15), ⟨10.1103/PhysRevB.102.155304⟩ |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.102.155304 |
| Popis: | International audience; Polariton lasers are mostly based on planar cavities. Here, we focus on an alternative configuration with slab waveguide modes strongly coupled to excitons confined in GaN/AlGaN quantum wells. We study experimentally and theoretically polariton relaxation at temperatures ranging from 4 to 200 K. We observe a good robustness of the lower polariton population peak energy position against temperature changes due to a balance between the shift of the exciton energy and the change in the normal mode splitting, a promising feature for future applications such as lasers and amplifiers where a small temperature drift in the emission wavelength is a desired asset. Finally, at T = 4 K we observe the signature of polariton nonlinearities occurring in the continuous wave regime that are assigned to an optical parametric oscillation process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|