Conference on Lasers and Electro-Optics 

About: Conference on Lasers and Electro-Optics is an academic conference. The conference publishes majorly in the area(s): Laser & Fiber laser. Over the lifetime, 48256 publications have been published by the conference receiving 139947 citations.

Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals

Abstract: We report the experimental discovery of intrinsic ferromagnetism in Cr 2 Ge 2 Te 6 atomic layers by scanning magneto-optic Kerr microscopy. In this 2D van der Waals ferromagnet, unprecedented control of transition temperature is realized via small magnetic fields.

Ultra-high-Q toroid microcavities on a chip

Abstract: We demonstrate microfabrication of ultra-high-Q microcavities on a chip, exhibiting a novel toroid-shaped geometry. The cavities possess Q-factors in excess of 100 million which constitutes an improvement close to 4 orders-of-magnitude in Q compared to previous work [B. Gayral, et al., 1999].

Attosecond Physics

Abstract: Summary form only given. Fundamental processes in atoms, molecules, as well as condensed matter are triggered or mediated by the motion of electrons inside or between atoms. Electronic dynamics on atomic length scales tends to unfold within tens to thousands of attoseconds (1 attosecond [as] = 10-18 s). Recent breakthroughs in laser science are now opening the door to watching and controlling these hitherto inaccessible microscopic dynamics. The key to accessing the attosecond time domain is the control of the electric field of (visible) light, which varies its strength and direction within less than a femtosecond (1 femtosecond = 1000 attoseconds). Atoms exposed to a few oscillations cycles of intense laser light are able to emit a single extreme ultraviolet (XUV) burst lasting less than one femtosecond. Full control of the evolution of the electromagnetic field in laser pulses comprising a few wave cycles have recently allowed the reproducible generation and measurement of isolated sub-femtosecond XUV pulses, demonstrating the control of microscopic processes (electron motion and photon emission) on an attosecond time scale. These tools have enabled us to visualize the oscillating electric field of visible light with an attosecond "oscilloscope", to control single-electron and probe multi-electron dynamics in atoms, molecules and solids. Recent experiments hold promise for the development of an attosecond X-ray source, which may pave the way towards 4D electron imaging with sub-atomic resolution in space and time.

Laser-induced damage in dielectrics with nanosecond-to-subpicosecond pulses

Abstract: The application of chirped-pulse amplification to short-pulse lasers has led to a dramatic increase in the number of high-power subpicosecond laser systems. Accordingly, knowing the short-pulse damage thresholds of optical components and scaling the damage thresholds with pulse width have become increasingly important.

Attosecond Metrology

Abstract: Attosecond metrology also exploits the sub-cycle time-dependent field of the laser to provide the shear needed to measure attosecond optical or electron pulses. Always the shear is applied to electrons because they respond easily to electric fields. Attosecond pulses can be measured in the nonlinear medium while they are being generated or they can be measured more conventionally, in a separate nonlinear medium. In this case, attosecond optical pulses transfer their amplitude and phase information to photoelectrons which are measured in their place. As in femtosecond science, measuring an ultrashort pulse and measuring an ultrafast dynamics excited by an attosecond pulse is similar. This paper describe the methods of attosecond metrology.