Ayan Banerjee

TL;DR: This work demonstrates for the first time the formation of continuous patterns of nanostructured materials using directed self-assembly under external fields using a tightly focused laser beam in an optical tweezers apparatus with potential for a wide range of applications ranging from solution processed printable electronics to controlled catalysis.

TL;DR: In this paper, a general approach to interference based on wavefront splitting is proposed, where interference is based on amplitude splitting multiple beam interference Diffraction Scalar diffraction theory Rayleigh criterion Rays and beams Eikonal equation and rays Ray propagation through linear optical elements Beam characteristics Optical waves in stratified media Characteristics matrix approach Amplitude reflection, transmission coefficients and dispersion relation Periodic media with discrete and continuous variation of refractive index Quasi-periodic media and self-similarity Analogy between quantum and optical systems Optical reflectionless potentials and perfect transmission Critical coupling and

TL;DR: In this article, the D1-line frequencies with 0.13 ppb uncertainty in the alkali atoms 39K, 85Rb, and 87Rb were measured using an evacuated ring-cavity resonator whose length is calibrated against a reference laser locked to the D2 line in 87 Rb.

TL;DR: A new technique for saturated-absorption spectroscopy by use of copropagating beams that does not have the problem of crossover resonances is demonstrated and is used to measure hyperfine intervals in the D2 line of 85Rb with a precision of 70 kHz and to resolve hyperfine levels that are less than 10 MHz apart.

TL;DR: In this paper, a method for accessing a signaling message for a frame to be transmitted through an optical network along a path, deriving an identifier of the path using the signaling message, attaching the identifier to an overhead section of the frame, and transmitting the frame through the optical network on the path with the attached identifier is described.