Thermally-electrically tunable graphene-based guided-mode resonant perfect absorber

• Published in: IEEE photonics technology letters Vol. 35; no. 4; p. 1
• Main Authors: Huang, Ze-Tao, Jiang, Hao-Yi, Wang, Zi-Ye, Qing, Ye-Ming, Li, Bing-Xiang
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.02.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Absorbers; Absorption; Amorphous silicon; Chemical potential; Couplings; Graphene; guided-mode resonance; high-quality factor; Ohmic dissipation; Optical polarization; Optical refraction; Optical switching; Optical variables control; perfect absorber; Refractivity; Resistance heating; Structural engineering; Thermal-electric tunability; Tuning

We propose a thermally-electrically tunable perfect absorber based on graphene and amorphous silicon. Numerical results reveal that a perfect absorption with narrow bandwidth can be induced owing to critical coupling with guided-mode resonance. The thermal tuning of resonant wavelength is realized v...