MICROSCOPY
... It is a component of a molecule which causes a molecule to be fluorescent. It is a functional group in a molecule which will absorb energy of a specific wavelength and re-emit energy at a different (but equally specific) ...
... It is a component of a molecule which causes a molecule to be fluorescent. It is a functional group in a molecule which will absorb energy of a specific wavelength and re-emit energy at a different (but equally specific) ...
`Lissajous-like` trajectories in optical tweezers
... We first study the evolution of the system when an actuator microsphere of 5 µm in diameter, is driven anticlockwise in a circular trajectory with a radius of 6 µm, at a rate of 2 Hz, corresponding to a constant speed of 75.4 µm/s, as shown in Fig. 2. The actuator’s trajectory is not symmetric upon ...
... We first study the evolution of the system when an actuator microsphere of 5 µm in diameter, is driven anticlockwise in a circular trajectory with a radius of 6 µm, at a rate of 2 Hz, corresponding to a constant speed of 75.4 µm/s, as shown in Fig. 2. The actuator’s trajectory is not symmetric upon ...
optical coherence tomography
... the scattering potential, extended over the illuminated volume. No structural information will be obtained in this case. At present all OCT techniques use backscattering at u=−p and a wavelength range from, say, l1 to l2 . These techniques give access to a set of Fourier data on the Kz-axis. Hence f ...
... the scattering potential, extended over the illuminated volume. No structural information will be obtained in this case. At present all OCT techniques use backscattering at u=−p and a wavelength range from, say, l1 to l2 . These techniques give access to a set of Fourier data on the Kz-axis. Hence f ...
COMPUTER GRAPHICS OPTIQUE Optical Superposition of
... the flight simulator community used a similar method called calligraphic lights to superimpose high intensity and brighter runway lights on a projected scene. Beyond increased brightness, we believe optical superposition augmented by some optical effects like blurring (available in most projectors), ...
... the flight simulator community used a similar method called calligraphic lights to superimpose high intensity and brighter runway lights on a projected scene. Beyond increased brightness, we believe optical superposition augmented by some optical effects like blurring (available in most projectors), ...
Novel applications of Photonic Force Microscopy Giovanni Volpe
... Abstract The ability of detecting forces and torques at the micro- and nano-scale is fundamental. When this Thesis started, various scanning probe techniques had already been developed to probe the mechanical properties of microsystems. In 1993 Ghislain and coworkers devised a new scanning force m ...
... Abstract The ability of detecting forces and torques at the micro- and nano-scale is fundamental. When this Thesis started, various scanning probe techniques had already been developed to probe the mechanical properties of microsystems. In 1993 Ghislain and coworkers devised a new scanning force m ...
Stability of Continuously Pumped Atom Lasers
... to determine whether pumped lasers approach single mode operation. As for optical lasers, if the lasing system can be accurately described as a single mode, then the quantum statistics of that mode control the linewidth of the output beam. This means that, although a semiclassical model is useful to ...
... to determine whether pumped lasers approach single mode operation. As for optical lasers, if the lasing system can be accurately described as a single mode, then the quantum statistics of that mode control the linewidth of the output beam. This means that, although a semiclassical model is useful to ...
High-resolution retinal microscopy using MEMS
... retinal disease, and can play a critical role for diagnosing systemic diseases such as diabetes and eye-specific diseases such as macular degeneration and diabetic retinopathy, the leading causes of blindness. It is demonstrated in this work that the µDM can enable diffraction-limited imaging of mic ...
... retinal disease, and can play a critical role for diagnosing systemic diseases such as diabetes and eye-specific diseases such as macular degeneration and diabetic retinopathy, the leading causes of blindness. It is demonstrated in this work that the µDM can enable diffraction-limited imaging of mic ...
properties of helium–neon lasers - UCSB Physics
... reached. Of course, at each transition, a photon is generated, and there are many such transitions, but we can only see the ones which generate light in the visible spectrum. 5 The transition that generates 632.8 nm photons occurs when the outermost Ne electrion decays from the 5s to the 3p orbital. ...
... reached. Of course, at each transition, a photon is generated, and there are many such transitions, but we can only see the ones which generate light in the visible spectrum. 5 The transition that generates 632.8 nm photons occurs when the outermost Ne electrion decays from the 5s to the 3p orbital. ...
An Introduction to Optical Window Design
... contraction due to thermal shock. When the bolts are tightened, the lead gasket on the outer surface of the window is crushed into the microscopic geometry of the NaCl and a seal is formed. On the inner surface a similar lead gasket is crushed onto an inner flange and deformed to its shape forming a ...
... contraction due to thermal shock. When the bolts are tightened, the lead gasket on the outer surface of the window is crushed into the microscopic geometry of the NaCl and a seal is formed. On the inner surface a similar lead gasket is crushed onto an inner flange and deformed to its shape forming a ...
Everything you always wanted to know about cascaded - KIT
... The properties of optical amplifiers and attenuators will be reviewed briefly [1-4]. Two-mode parametric amplifiers are signal-phase-insensitive (PI) if one input amplitude is nonzero, in which case the input (signal) is amplified. They are phase-sensitive (PS) if both inputs are nonzero, in which c ...
... The properties of optical amplifiers and attenuators will be reviewed briefly [1-4]. Two-mode parametric amplifiers are signal-phase-insensitive (PI) if one input amplitude is nonzero, in which case the input (signal) is amplified. They are phase-sensitive (PS) if both inputs are nonzero, in which c ...
FUL TEXT
... the center makes the light rays moving down the axis advance more slowly than those near the cladding. Also, rather than zigzagging off the cladding, light in the core curves helically because of the graded index, reducing its travel distance. The shortened path and the higher speed allow light at t ...
... the center makes the light rays moving down the axis advance more slowly than those near the cladding. Also, rather than zigzagging off the cladding, light in the core curves helically because of the graded index, reducing its travel distance. The shortened path and the higher speed allow light at t ...
ERBIUM DOPED FIBER AMPLIFIERS (EDFA)
... with Zr, acts as a glass former), La (intermediate), Ba and Na (network modifiers). The La atoms are easily substituted by rare earths such as Er. ...
... with Zr, acts as a glass former), La (intermediate), Ba and Na (network modifiers). The La atoms are easily substituted by rare earths such as Er. ...
Optics Letters: 32(6) - Technion
... to be the foundation of a variety of future optomechanical systems. In addition to the vast research devoted to the manipulation of small particles by laser light,1 one of the subjects that have been investigated is the trapping of a mirror in a stable equilibrium state by using radiation pressure. ...
... to be the foundation of a variety of future optomechanical systems. In addition to the vast research devoted to the manipulation of small particles by laser light,1 one of the subjects that have been investigated is the trapping of a mirror in a stable equilibrium state by using radiation pressure. ...
Physicists realize an atom laser, a source of coherent matter waves
... or continuous) beam of coherent atoms. A simple way to accomplish this is to switch off the atom trap and release the atoms. This is analogous to cavity dumping for an optical laser and extracts all the stored atoms into a single pulse. A more controlled way to extract the atoms requires a coupling ...
... or continuous) beam of coherent atoms. A simple way to accomplish this is to switch off the atom trap and release the atoms. This is analogous to cavity dumping for an optical laser and extracts all the stored atoms into a single pulse. A more controlled way to extract the atoms requires a coupling ...
Subcarrier multiplexing for high-speed optical transmission
... has been pursued by industry and the research community to increase fiber transmission capacity. More sophisticated modulation formats may help to increase the bandwidth efficiency compared to the basic ON–OFF keying modulation. Optical subcarrier multiplexing (SCM) is a scheme where multiple signal ...
... has been pursued by industry and the research community to increase fiber transmission capacity. More sophisticated modulation formats may help to increase the bandwidth efficiency compared to the basic ON–OFF keying modulation. Optical subcarrier multiplexing (SCM) is a scheme where multiple signal ...
Helium Neon Laser - Abbe School of Photonics
... principles may be found in [7], specially about rate equations. ...
... principles may be found in [7], specially about rate equations. ...
Color center production by femtosecond-pulse laser
... pulses, resulting in w = 390 µm. In this measure, the pulse energy was 547 µJ and the pulse width was 60 fs, resulting in a color center creation threshold of 1.9 TW/cm2 for YLF. By applying a method recently developed [2, 13] to estimate the threshold for color center formation in LiF, its value wa ...
... pulses, resulting in w = 390 µm. In this measure, the pulse energy was 547 µJ and the pulse width was 60 fs, resulting in a color center creation threshold of 1.9 TW/cm2 for YLF. By applying a method recently developed [2, 13] to estimate the threshold for color center formation in LiF, its value wa ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.