WebIn this study, a novel distance sensing method is presented by using a semiconductor laser (SL) with optical feedback (OF) and operating the SL at a switching status happened between two nonlinear dynamic states (stable state and period-one state). In this case, without the need for any electronic or optical modulation devices, the laser intensity can … WebPhase-inserted fiber gratings (PI-FGs) refer to those gratings where there exist a number of the phase-shifts (spatial spacing) among different sections (or local periods) of the gratings themselves. All the PI-FGs developed to date can mainly be divided into three categories: phase-shifted gratings, phase-only sampled gratings, and phase-modulated gratings, of …
Absolute distance measurement using optical sampling by …
WebApr 22, 2024 · We use two Ti/sapphire pulse lasers from Mai Tai (Spectra-Physics) and Mira (COHERENT) as pump and probe light pulses, respectively. Their repetition frequency f r, wavelength, and pulse width are ∼80 MHz, 800 nm, and 100–130 fs, respectively. However, because the lasers are free-running, Δf varies with time and we directly measure Δf using … WebMar 12, 2024 · We demonstrate a method for absolute distance measurement based on an optical frequency comb and an optoelectronic oscillator. The unknown distance is measured using optical sampling by cavity tuning. A 1000-m-long fiber is used as a reference path and actively stabilized by the optoelectronic oscillator without ambiguous … easter egg decorating ideas designs image
Time-Wavelength Optical Sampling Based on Laser Cavity …
WebApr 13, 2024 · Electro-optic sampling relies on the optical up-conversion of a ... and an even higher non-linear coefficient (d = 54 pm/V) and allows for a fine tuning of the phase-matching bandwidth by ... J. M., Brune, M., and Haroche, S. (2001). Manipulating quantum entanglement with atoms and photons in a cavity. Rev. Mod. Phys. 73, 565 ... WebAbstract:Optical sampling by cavity tuning (OSCAT) enables cost- effective realization of fast tunable optical delay using a single femtosecond laser. We report here a dynamic … WebJun 1, 2015 · We report here a demonstration of depth-resolved optical imaging based on optical sampling by cavity tuning (OSCAT). Both optical coherence tomography and three-dimensional surface mapping are performed using an OSCAT imager. Limitations on axial resolution and pulse repetition-rate stability are discussed and viable solutions are … cudahy city council