A single-beam gradient-force optical trap for dielectric particles, which relies solely on the radiation pressure force of a TEM(00)-mode laser light, is demonstrated in air for what is believed to be the first time. It was observed that micrometer-sized glass spheres with a refractive index of n=1.45 remained trapped in the focus region for more than 30 min, and we could transfer them three di...

Progress on these topics is occasionally updated in Coating Materials News (CMN) issues since polymer substrates are being used with greater frequency in displays, solar panels, laminated window glazing, reflectors for illumination, and other optical applications. Injection molded or form cast polymer parts are now mass-produced as economical and light-weight replacements for glass parts. The s...

194 LLE Review, Volume 99 Introduction Optical parametric chirped-pulse amplification1,2 (OPCPA) is well suited for the front end of modern petawatt glass laser chains.3 The broadband gain available with OPCPA at a wavelength of 1053 nm offsets the gain narrowing that occurs in large Nd-doped glass amplifiers.4 It can be scaled to large energies,5 in contrast to the practical limits imposed by ...

Using tightly focused femtosecond laser pulses of just 5 nJ, we produce optical breakdown and structural change in bulk transparent materials and demonstrate micromachining of transparent materials by use of unamplified lasers. We present measurements of the threshold for structural change in Corning 0211 glass as well as a study of the morphology of the structures produced by single and multip...

Laser damage thresholds at 248nm of TiO,, ZrO, and HfO, thin films of h optical thickness on SQ1 quartz glass substrates are determined by the photoacoustic mirage technique. Damage thresholds correlate with the band gap energy of these materials, as determined by optical spectroscopy. It is demonstrated that the damage resistance can be raised by an additional h/2 SiO, overlayer. Damage thresh...

Electrically induced signals and light emissions from Restrictive Plate Chamber (RPC) are simultaneously measured using a glass RPC with transparent high-voltage planes, operating in the streamer mode. With one exception, good correspondence is seen in between the electrical and optical signals in every aspect: signal shapes, pulse heights, timing and afterpulses. The one exception is a possibl...

In this paper we reported theoretical results from measurement of Ge22Se78-XInx ( x= 2, 4, 6, 8, 10) Glass system. The relationship between ∆Eg and chemical composition has been discussed in terms of the Hs and Z. In order to correlate the optical parameter (∆Eg) with film composition we used the energetic parameter (A). It has been found that lone-pair electrons (L) and deviation of stoichiome...

Here we report a simple and scalable bottom-up technology for assembling close-packed nanoparticle monolayers on both sides of a glass substrate as high-quality antiglare coatings. Optical measurements show that monolayer coatings consisting of 110 nm silica nanoparticles can significantly reduce optical reflectance and enhance specular transmittance of the glass substrate for a broad range of ...

The behavior of tapered graded-index polymer optical fibers is analyzed computationally for different refractive indices of the surrounding medium. This serves to clarify the main parameters affecting their possible performance as refractive-index sensors and extends an existing study of similar structures in glass fibers. The ray-tracing method is employed, its specific implementation is expla...

I propose to develop an algorithm for generating physically accurate stained glass images. I will study the chemistry and the optics of stained glass and analyze the optical properties of lead. I will implement a physics-based stained glass modeling algorithm and a distributed ray tracer, which will increase the realism. The output software will be able to generate stained glass images from mod...