Results 251 to 260 of about 527,555 (282)
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SPIE Proceedings, 2012
A random laser is formed by a haphazard assembly of nondescript optical scatters with optical gain. Multiple light scattering replaces the optical cavity of traditional lasers and the interplay between gain, scattering and size determines its unique properties.
Leonetti Marco, Lopez Cefe
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A random laser is formed by a haphazard assembly of nondescript optical scatters with optical gain. Multiple light scattering replaces the optical cavity of traditional lasers and the interplay between gain, scattering and size determines its unique properties.
Leonetti Marco, Lopez Cefe
openaire +1 more source
Multifunctional Random-Laser Smart Inks
ACS Applied Materials & Interfaces, 2020With the superiority of laser-level intensity, narrow spectral line width, and broad-angular emission, random lasers (RLs) have drawn considerable research interests for their potential to carry out a variety of applications. In this work, the applications associated with optical-encoded technologies, including security printing, military friend or foe
Chen-You Su +6 more
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2002
Abstract : This report results from a contract tasking FORTH, Foundation for Research & Technology--Hellas as follows: The contractor will synthesize polymer nanocomposite materials and will investigate their properties appropriate to developing a new generation of flexible lasers.
E. P. Giannelis +4 more
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Abstract : This report results from a contract tasking FORTH, Foundation for Research & Technology--Hellas as follows: The contractor will synthesize polymer nanocomposite materials and will investigate their properties appropriate to developing a new generation of flexible lasers.
E. P. Giannelis +4 more
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Dissolvable and Recyclable Random Lasers
ACS Nano, 2017An integrated random laser based on green materials with dissolubility and recyclability is created and demonstrated. The dissolvable and recyclable random laser (DRRL) can be dissolved in water, accompanying the decay of emission intensity and the increment in lasing threshold.
Xiaoyu Shi +10 more
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Lasers with Random Stack Mirrors
Applied Optics, 1970The behavior of Q-switched, free-running, and mode-locked laser oscillators, with one cavity mirror consisting of a stack of thin glass plates, is described. The beam divergence can equal that obtained with a thin film coated dielectric mirror, but intensity and spatial coherence vary over the beam cross section.
G, Magyar, A C, Seiden
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Aerosol-based coherent random laser
Optics Letters, 2012We demonstrate coherent random lasing from an aerosol of dye-doped microdroplets in air. The aerosol is in the form of a linear array of polydisperse, arbitrarily shaped, and randomly spaced microdroplets with average dimensions of about 30 μm. Upon optical excitation, ultranarrow lasing modes were observed in the emission along the axis of the linear ...
Anjani Kumar, Tiwari +2 more
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A curvature-tunable random laser
Nanoscale, 2019We report the first experimental demonstration of curvature-tunable random lasers to control the transport mean free path of emitted photons.
Ya-Ju Lee +6 more
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Physical Review Letters, 2002
We present an analytical approach to random lasing in a one-dimensional medium, consistent with transfer matrix numerical simulations. It is demonstrated that the lasing threshold is defined by transmission through the passive medium and thus depends exponentially on the size of the system.
A L, Burin +3 more
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We present an analytical approach to random lasing in a one-dimensional medium, consistent with transfer matrix numerical simulations. It is demonstrated that the lasing threshold is defined by transmission through the passive medium and thus depends exponentially on the size of the system.
A L, Burin +3 more
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Amplified Extended Modes in Random Lasers
Physical Review Letters, 2004We report on a new random laser phenomenon that gives rise to narrow emission modes without requiring optical cavities. Sharp emission peaks are observed experimentally over a broad range of scattering strengths and analyzed in numerical calculations.
MUJUMDAR S. +3 more
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