Laser Cutting
... refracted waves. If the speed of light in the medium varies with wavelength, then dispersion takes place. Dispersion is where light gets separated out into its different wavelengths (frequencies, colours) e.g. You see this when sunlight reflects off water particles and is separated into the colours ...
... refracted waves. If the speed of light in the medium varies with wavelength, then dispersion takes place. Dispersion is where light gets separated out into its different wavelengths (frequencies, colours) e.g. You see this when sunlight reflects off water particles and is separated into the colours ...
... 1. A Quartz crystal of thickness 0.001 m vibrates in its fundamental frequency. Calculate its frequency. (Given that E= 7.9X1010 and ρ = 2650Kg/m3 for quartz) 2. An ultrasonic interferometer used to measure the velocity in sea water. If the distance between two constructive anti nodes is 0.55 mm. Co ...
Measurement of radiation-pressure
... antidamp 共redshifted, PI兲 the motion. This effect is predominantly important for the acoustic modes of mirrors, which are extremely stiff and have extremely small mechanical damping. PIs have been observed in resonant bar detectors with microwave resonator readouts 关12兴 and in optical microcavities ...
... antidamp 共redshifted, PI兲 the motion. This effect is predominantly important for the acoustic modes of mirrors, which are extremely stiff and have extremely small mechanical damping. PIs have been observed in resonant bar detectors with microwave resonator readouts 关12兴 and in optical microcavities ...
Catching the wave - Selected Topics in Quantum Electronics, IEEE
... turnpike). The problem I encountered at Bell Laboratories (Bell) was that nobody told me what to do. How could I be sure that the topic I would choose would be up to the standards of this world-renowned institution? Because of my microwave background, I got involved in taking advantage of the negati ...
... turnpike). The problem I encountered at Bell Laboratories (Bell) was that nobody told me what to do. How could I be sure that the topic I would choose would be up to the standards of this world-renowned institution? Because of my microwave background, I got involved in taking advantage of the negati ...
Interferences of Ultrashort Free Electron Wave Packets
... The time development of the electron wave packet is depicted in Figs. 1(c) –1(e) for two 30 fs FWHM, 790 nm Gaussian laser pulses with a delay of 120 fs. At the end of the laser interaction the outward moving electron wave packet exhibits a double peaked structure similar to the exciting laser pul ...
... The time development of the electron wave packet is depicted in Figs. 1(c) –1(e) for two 30 fs FWHM, 790 nm Gaussian laser pulses with a delay of 120 fs. At the end of the laser interaction the outward moving electron wave packet exhibits a double peaked structure similar to the exciting laser pul ...
Spectral Super-Resolution by Understanding Superposition
... Accordingly, we claim that our time domain formulation represented by Eq.10 and 11 is a better and more generalized approach to spectrometry than the traditional approach since it starts with a general pulse and derives the CW formulas as a special case when the pulse is longer than τ 0 . This also ...
... Accordingly, we claim that our time domain formulation represented by Eq.10 and 11 is a better and more generalized approach to spectrometry than the traditional approach since it starts with a general pulse and derives the CW formulas as a special case when the pulse is longer than τ 0 . This also ...
Mode-locking
Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12 s) or femtoseconds (10−15 s).The basis of the technique is to induce a fixed-phase relationship between the longitudinal modes of the laser's resonant cavity. The laser is then said to be 'phase-locked' or 'mode-locked'. Interference between these modes causes the laser light to be produced as a train of pulses. Depending on the properties of the laser, these pulses may be of extremely brief duration, as short as a few femtoseconds.