Efficient telecom to visible wavelength conversion in doubly resonant GaP microdisks

Optical control of individual carbon nanotube light emitters by spectral double resonance in silicon microdisk resonators

Single-walled carbon nanotubes have advantages as a nanoscale light source compatible with silicon photonics because they show room-temperature luminescence at telecom-wavelengths and can be directly synthesized on silicon substrates. Here we demonstrate integration of individual light-emitting carbon nanotubes with silicon microdisk resonators. Photons emitted from nanotubes are efficiently coupled to whispering gallery modes, circulating within the disks and lighting up their perimeters. Furthermore, we control such emission by tuning the excitation wavelength in and out of resonance with hi…

Doubly resonant photonic antenna for single infrared quantum dot imaging at telecommunication wavelengths

Colloidal Quantum dots (CQDs) are nowadays one of the cornerstones of modern photonics as they have led to the emergence of new optoelectronic and biomedical technologies. However, the full characterization of these quantum emitters is currently restricted to the visible wavelengths and it remains a key challenge to optically probe single CQDs operating in the infrared spectral domain which is targeted by a growing number of applications. Here, we report the first experimental detection and imaging at room temperature of single infrared CQDs operating at telecommunication wavelengths. Imaging …

高Q值绝缘体上钽酸锂微盘中的拉曼辅助多波段非线性频率转换网络

Raman-Assisted Multiband Nonlinear Frequency-Conversion Network in a High-Q LTOI Microdisk

研究在高Q值LTOI微盘中实现拉曼辅助多波段非线性频率转换网络，通过谐振泵浦产生高纯度单模拉曼激光，附近泵浦下产生多斯托克斯分量及反斯托克斯线，可产生多波段信号，为集成多波段光源及研究耦合非线性动力学提供了平台。

Control of Second Harmonic Generation in Doubly Resonant Aluminum Nitride Microrings to Address Rubidium Two-Photon Clock Transition

Nonlinear optical effects have been studied extensively in microresonators as more photonics applications transition to integrated on-chip platforms. Due to low optical losses and small mode volumes, microresonators are demonstrably the state-of-the-art platform for second harmonic generation (SHG). However, the working bandwidth of such microresonator-based devices are relatively small, presenting a challenge for applications where a specifically targeted wavelength needs to be addressed. In this work, we analyzed the phase-matching window and resonance wavelength with respect to varying micr…

Doubly resonant photonic crystal cavities for efficient second-harmonic generation in III-V semiconductors

Second-order nonlinear effects, such as second-harmonic generation, can be strongly enhanced in nanofabricated photonic materials when both fundamental and harmonic frequencies are spatially and temporally confined. Practically designing low-volume and doubly resonant nanoresonators in conventional semiconductor compounds is challenging owing to their intrinsic refractive index dispersion. In this work we review a recently developed strategy to design doubly resonant nanocavities with low mode volume and large quality factor by localized defects in a photonic crystal structure. We build on thi…

芯片上超宽带毫瓦级谐振倍频

Ultrabroadband Milliwatt-Level Resonant Frequency Doubling on a Chip

本文提出一种新型集成器件，通过两个独立微环谐振器分别增强泵浦光与二次谐波，实现超宽带谐振倍频，克服了传统色散约束，在电信波段实现毫瓦级二次谐波产生及Kerr频率梳上转换。