Results 21 to 25 of about 375,337 (25)

Three-dimensional, multi-wavelength beam formation with integrated metasurface optics for Sr laser cooling [PDF]

arXiv
We demonstrate the formation of a complex, multi-wavelength, three-dimensional laser beam configuration with integrated metasurface optics. Our experiments support the development of a compact Sr optical-lattice clock, which leverages magneto-optical trapping on atomic transitions at 461 nm and 689 nm without bulk free-space optics.
arxiv  

On-Chip Optical Switching with Epsilon-Near-Zero Metamaterials [PDF]

arXiv
We present a multifunctional on-chip optical device utilizing epsilon-near-zero (ENZ) metamaterials, allowing precise beam control through phase modulation. This design acts as both an all-optical switch and a tunable beam splitter, providing compact and scalable solutions for integrated photonic applications.
arxiv  

Optical phased array using phase-controlled optical frequency comb [PDF]

arXiv
We developed an optical phased array using an optical frequency comb and demonstrated its proof-of-principle. Optical phased arrays have been actively developed in recent years as a technology that can control the wavefront of light without any mechanical devices like phased array radar.
arxiv  

Critical nonreciprocity in gyrotropic coupled-waveguide system for TE-mode optical isolator and circulator [PDF]

arXiv
Photonic integrated circuits (PICs) increasingly require more advanced integrated functionalities and devices to meet the key application challenges. This evolution with the serial integration of optical functions in the same photonic circuit often results in internal reflections and optical feedback, which can specifically destabilize lasers.
arxiv  

Integrated photonic nonreciprocal devices based on susceptibility-programmable medium [PDF]

arXiv
The switching and control of optical fields based on nonlinear optical effects are often limited to relatively weak nonlinear susceptibility and strong optical pump fields. Here, an optical medium with programmable susceptibility tensor based on polarizable atoms is proposed.
arxiv