Antireflective Coatings
... Now we can provide all kinds of coatings as follows: Antireflective Coatings Single Layer MgF2 AR Coatings (SAR) Multilayer AR Coatings (VAR) Broadband Multilayer AR Coatings (WAR) Dual Wavelength Band AR Coatings (DAR) Partial Reflective Coatings Single Wavelength Band PR Coatings (SPR) Broadband P ...
... Now we can provide all kinds of coatings as follows: Antireflective Coatings Single Layer MgF2 AR Coatings (SAR) Multilayer AR Coatings (VAR) Broadband Multilayer AR Coatings (WAR) Dual Wavelength Band AR Coatings (DAR) Partial Reflective Coatings Single Wavelength Band PR Coatings (SPR) Broadband P ...
Orbital angular momentum: origins
... of the electromagnetic field [4]. For the case of circular polarization, the axial component of the electromagnetic field is an unavoidable consequence of the radial gradient in intensity that occurs at the edge of the beam or the measurement system. A detailed treatment of these edge effects, for a ...
... of the electromagnetic field [4]. For the case of circular polarization, the axial component of the electromagnetic field is an unavoidable consequence of the radial gradient in intensity that occurs at the edge of the beam or the measurement system. A detailed treatment of these edge effects, for a ...
Near-field thermal transport in a nanotip under laser irradiation
... of the tip: decreasing with increasing taper angle [44, 48]. The temperature coefficients varied from 20 K m−1 W−1 for a tip with large cone angle to 60 K m−1 W−1 for the narrow one [44]. The measured temperature increase at a distance of 70 μm from the aperture (apex) was linear with the input ligh ...
... of the tip: decreasing with increasing taper angle [44, 48]. The temperature coefficients varied from 20 K m−1 W−1 for a tip with large cone angle to 60 K m−1 W−1 for the narrow one [44]. The measured temperature increase at a distance of 70 μm from the aperture (apex) was linear with the input ligh ...
Patterned dielectric membranes designed for optical sensing
... means of improving health care. This has created a demand for high-sensitivity biosensors. By detecting low levels of disease specific molecules in human samples of blood, saliva, urine or spinal fluids, biosensors can be used to discover illnesses at a stage where they are still harmless and treata ...
... means of improving health care. This has created a demand for high-sensitivity biosensors. By detecting low levels of disease specific molecules in human samples of blood, saliva, urine or spinal fluids, biosensors can be used to discover illnesses at a stage where they are still harmless and treata ...
l - band variable gain amplifier with erbium doped fiber
... There are various different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. There are many types of optical fiber used to amplify the light signal. In doped fiber amplifiers and bulk lasers, stimulated emission in the amplifi ...
... There are various different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. There are many types of optical fiber used to amplify the light signal. In doped fiber amplifiers and bulk lasers, stimulated emission in the amplifi ...
Fluorescence of coumarins and xanthenes after two
... side on2. The spectral bandwidth is 8 nm. Since the natural bandwidth of the fluorescence spectra is 30–50-nm error in determining the true peak height is less than 5%.11 The signal of the photomultiplier tube 1PMT2 was amplified 1Hamamatsu C 1053-12 and measured with an analog-to-digital–digital-to ...
... side on2. The spectral bandwidth is 8 nm. Since the natural bandwidth of the fluorescence spectra is 30–50-nm error in determining the true peak height is less than 5%.11 The signal of the photomultiplier tube 1PMT2 was amplified 1Hamamatsu C 1053-12 and measured with an analog-to-digital–digital-to ...
Quantum theory of high-resolution length measurement with a Fabry
... output fields of a Fabry-Perot cavity . They use quantized fields with different creation and destruction operator pairs for the different spatial regions of the modes shown in figure 1 . Their results for an empty cavity are equivalent to (15) and (20) . Collett and Gardiner [14] have given an anal ...
... output fields of a Fabry-Perot cavity . They use quantized fields with different creation and destruction operator pairs for the different spatial regions of the modes shown in figure 1 . Their results for an empty cavity are equivalent to (15) and (20) . Collett and Gardiner [14] have given an anal ...
High-power, fiber-laser-pumped frequency conversion sources for the ultraviolet
... the leadership techniques, the personal development courses and the entrepreneurial spirit that everyday involves to each and every ICFOnian what makes the difference between a great place and a top place. I am embedded in this philosophy and I truly believe ICFO is addressed to create new world lea ...
... the leadership techniques, the personal development courses and the entrepreneurial spirit that everyday involves to each and every ICFOnian what makes the difference between a great place and a top place. I am embedded in this philosophy and I truly believe ICFO is addressed to create new world lea ...
Silicon-on-Insulator Grating Duplexer for Fiber-to-the
... duplexing operation and fiber-to-chip interfacing is presented in figure 1. It consists of a one-dimensional grating structure defined on an SOI waveguide platform. The single mode optical fiber is tilted by an angle θ with respect to the vertical axis. While in standard fiber-to-waveguide grating c ...
... duplexing operation and fiber-to-chip interfacing is presented in figure 1. It consists of a one-dimensional grating structure defined on an SOI waveguide platform. The single mode optical fiber is tilted by an angle θ with respect to the vertical axis. While in standard fiber-to-waveguide grating c ...
Soliton Interaction in Fiber Bragg Gratings: Optical AND Gate Formation
... output. However, it is possible to introduce another gap soliton to shift the spectral center of the first soliton. If this shift is sufficiently large, one soliton no longer has a center wavelength within the photonic bandgap and is transmitted through the FBG. The other soliton remains in the gap ...
... output. However, it is possible to introduce another gap soliton to shift the spectral center of the first soliton. If this shift is sufficiently large, one soliton no longer has a center wavelength within the photonic bandgap and is transmitted through the FBG. The other soliton remains in the gap ...
Optical switches
... • Semiconductor laser is also known as laser diode and injection laser • Operation of a laser is the same as for any other oscillator - gain (amplification) and feedback • As a device semiconductor laser is similar to a LED (i.e. p-n semiconductor diode) • A difference is that the ends of the active ...
... • Semiconductor laser is also known as laser diode and injection laser • Operation of a laser is the same as for any other oscillator - gain (amplification) and feedback • As a device semiconductor laser is similar to a LED (i.e. p-n semiconductor diode) • A difference is that the ends of the active ...
The Strontium Optical Lattice Clock
... is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressive frequency measurement accuracy, with fractional uncertainties below the 10−15 ...
... is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressive frequency measurement accuracy, with fractional uncertainties below the 10−15 ...
Photonic laser thruster
A photonic laser thruster is an amplified laser thruster that generates thrust directly from the laser photon momentum, rather than laser-heating propellant. The concept of single-bounce laser-pushed lightsails that utilize the photon momentum was first developed in the 1960s, however, its conversion of laser power to thrust is highly inefficient, thus has been considered impractical. Over 50 years, there had been numerous theoretical and experimental efforts to increase the conversion efficiency by recycling photons, bouncing them repetitively between two reflective mirrors in an empty optical cavity, without success. In December 2006, Young Bae successfully solved this problem and demonstrated the conversion efficiency enhancement by a factor of 100 and a photon thrust of 35 micronewtons by putting the laser energizing media between the two mirrors as in typical lasers, and the photonic laser thruster was born. In August 2015, the photonic laser thruster was demonstrated to increase the conversion efficiency enhancement by a factor over 1,000 and to achieve a photon thrust of 3.5 millinewtons at Y.K. Bae Corporation. In addition, Propelling, slowing and stopping of a small satellite, 1U CubeSat, in simulated zero-gravity were demonstrated. The photonic laser thruster was initially developed for use in nanometer precision spacecraft formation, for forming ultralarge space telescopes and radars. The photonic laser thruster is currently developed for high-precision and high-speed maneuver of small spacecraft, such as formation flying, orbit adjustments, drag compensation, and rendezvous and docking. The photonic laser thruster can be used for beaming thrust from a conventional heavy resource vehicle to a more expensive & lightweight mission vehicle, similar to tankers in aerial refueling.The practical usage of the photonic laser thruster for main space propulsion would require extremely high laser powers and overcoming technological challenges in achieving the laser power and fabricating the required optics. Photonic laser thrusters have a very high specific impulse, and can permit spacecraft reach much higher speeds than with conventional rockets, which are limited by the Tsiolkovsky rocket equation. If the photonic laser thruster is scalable for the use in such main space propulsion, multiple photonic laser thrusters can be used to construct a 'photonic railway' that has been proposed as a potential permanent transport infrastructure for interplanetary or interstellar commutes, allowing the transport craft themselves to carry very little fuel.