Photothermally Induced Transparency in Mode‐Cascaded Microcavity

Abstract

Controllable optical elements play an important role in both classical and quantum devices, making it essential to achieve controllable light transmission in a high‐precision whispering gallery mode dielectric cavity. Herein, transmission control in a dielectric microcavity with the photothermal effect is investigated. The photothermal effect introduces a thermal disturbance in a dynamical process, whose interference with the original transmission leads to the emergence of a transparent window. To obtain and regulate the transparent window, the amplitude and frequency of the eigenfrequency oscillation in the optical mode are tuned, which can be achieved by modulating the power of the pump beam. Dynamical photothermally induced transparency in a mode‐cascaded microcavity is important for exploring novel physical properties in cavity‐based all‐optical control.

Controlling asymmetric transmission in layered natural hyperbolic crystals

“…62 These photothermal effects have been demostrated in microscopes 63 and a dielectric microcavity. 64 In the current study, the selected output angle is controlled by the frequency of the incident light and the rotation of the anisotropy axis. However, once the structure is created, there is no more tunability due to the rotation of the anisotropy axis rotation.…”

A Reversible Tuning of High Absorption in Chalcogenide–Metal Stacked‐Layer Structure and Its Application for Multichannel Biosensing

“…In the past decade, high absorption of light becomes a rising research field which has been intensely explored in many applications, including solar cell, photodetectors, thermal imaging, color filters, and biosensing. [ 1-6 ] Recently, metamaterial (MM)‐based absorbers have attracted much attention because they can achieve nearly high absorptance. [ 7 ] For example, photonic hypercrystals, a combination between hyperbolic MMs and photonics crystals, were proposed to offer wideband enhancement in light outcoupling and spontaneous emission rate.…”

Hybrid Dissipative and Dispersive Optomechanically Induced Transparency

“…OMIT, as the analogue of electromagnetically induced transparency (EIT) [45], [46], [47], [48], [49], [50], [51], [52], [53], refers to the phenomenon in which the probe light forms a transparency window due to the interference when the dispersive optomechanical behavior is driven by the pump light. It should be noticed that OMIT/EIT is different from the Autler-Townes splitting (ATS) which can also produce double resonant peaks [54], [55], [56].…”