Acceleration of femtosecond pulses to superluminal velocities by
... not depend on the dispersion of the lens material. As far as we know, this kind of superluminal pulse propagation was not recognized before. Our results do not violate the theory of special relativity because the group velocity is the velocity of the peak of the pulse and an intensity maximum could ...
... not depend on the dispersion of the lens material. As far as we know, this kind of superluminal pulse propagation was not recognized before. Our results do not violate the theory of special relativity because the group velocity is the velocity of the peak of the pulse and an intensity maximum could ...
HOLOGRAPHY, 1948-1971
... suitable optics, and the other has then twice the aberration, which washes it out almost completely. Figure 7 shows that a perfectly sharp reconstruction, in which as good as nothing remains of the disturbance caused by the second image, can be obtained with a lens so bad that its definition is at l ...
... suitable optics, and the other has then twice the aberration, which washes it out almost completely. Figure 7 shows that a perfectly sharp reconstruction, in which as good as nothing remains of the disturbance caused by the second image, can be obtained with a lens so bad that its definition is at l ...
Title of Presentation
... or elements by an amount that compensates for thermal defocus By using two different materials with very different TCE arranged as either differential expansion cylinders or rods, it is possible to move the compensating element directly Rods or cylinders must be of sufficient length ...
... or elements by an amount that compensates for thermal defocus By using two different materials with very different TCE arranged as either differential expansion cylinders or rods, it is possible to move the compensating element directly Rods or cylinders must be of sufficient length ...
measuring wavelength discrimination threshold along the entire
... same time to the interference filter too. The other digital linear scale detects this displacement. Hence with moving the interference filter the wavelength changes in both channels, but when moving the input slot of the measuring light only its own wavelength is changing relative to the wavelength ...
... same time to the interference filter too. The other digital linear scale detects this displacement. Hence with moving the interference filter the wavelength changes in both channels, but when moving the input slot of the measuring light only its own wavelength is changing relative to the wavelength ...
Document
... • Reducing reliance on the in line arrangement PMTs • Placing a second fluorescence collection lens at 180o from the first one (this is more difficult in most instruments) ...
... • Reducing reliance on the in line arrangement PMTs • Placing a second fluorescence collection lens at 180o from the first one (this is more difficult in most instruments) ...
lenses - Van Buren Public Schools
... object, represented by the vertical arrow. Any point except for the point on the principal axis will work, but it is customary to choose a point at the tip of the arrow. The path of one refracted ray is known from the definition of the focal point. A ray parallel to the principal axis will be refrac ...
... object, represented by the vertical arrow. Any point except for the point on the principal axis will work, but it is customary to choose a point at the tip of the arrow. The path of one refracted ray is known from the definition of the focal point. A ray parallel to the principal axis will be refrac ...
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Light Microscopy [10 credits]
... Description: Basics of spectral un-mixing, the spectral cross-talk problem … Author(s): Dr. Rolly U. Wiegand Learning Objectives Explain the spectral cross-talk problem Interpret an alternative spectral separation technology – un-mixing Compare briefly different microscope set-ups for spectral ...
... Description: Basics of spectral un-mixing, the spectral cross-talk problem … Author(s): Dr. Rolly U. Wiegand Learning Objectives Explain the spectral cross-talk problem Interpret an alternative spectral separation technology – un-mixing Compare briefly different microscope set-ups for spectral ...
Semiconductor Laser Diodes
... What are their uses? • Semiconductor laser diodes can be used for many applications. The amount of products that can be developed using this simple type of device continues to grow all the time. • Of course, the most easily thought of product of the S.L.D.s are lasers pointers, but it’s what else t ...
... What are their uses? • Semiconductor laser diodes can be used for many applications. The amount of products that can be developed using this simple type of device continues to grow all the time. • Of course, the most easily thought of product of the S.L.D.s are lasers pointers, but it’s what else t ...
Development of a67kHz Internal OPO Laser for Hellborne LIdar
... Wlaser diode (LD) as a pump light source and used KTP (KTiOPO4) for the non-linear optical crystal. The light-to-light conversion efficiency was 5%. This laser weighs 6.25 kg and its dimensions are 115 x 73 x 337 mm[1]. Improving the spatial resolution of this lidar system requires higher repetition ...
... Wlaser diode (LD) as a pump light source and used KTP (KTiOPO4) for the non-linear optical crystal. The light-to-light conversion efficiency was 5%. This laser weighs 6.25 kg and its dimensions are 115 x 73 x 337 mm[1]. Improving the spatial resolution of this lidar system requires higher repetition ...
Multi-Colour and Tunable-Colour Pyroelectric Detectors
... wheel method. A plurality of filters, each of which transmit radiation at an absorption band of a gas component to be detected, are alternately positioned in the radiation path to produce a time-multiplexed signal having the concentration information for all gases. ...
... wheel method. A plurality of filters, each of which transmit radiation at an absorption band of a gas component to be detected, are alternately positioned in the radiation path to produce a time-multiplexed signal having the concentration information for all gases. ...
Syllabus
... HW Policy: Due at beginning of class on due date. Graded only if legible (as judged by grader). Highly recommended to do it in latex. A correct homework solution is a narrative that describes the physical situation, the equations and variables used and their physical importance, and finally draws a ...
... HW Policy: Due at beginning of class on due date. Graded only if legible (as judged by grader). Highly recommended to do it in latex. A correct homework solution is a narrative that describes the physical situation, the equations and variables used and their physical importance, and finally draws a ...
Slow light in various media: a tutorial
... extensive knowledge of optical physics, while the basics are not covered in sufficient detail. This tutorial is an attempt to provide the most basic treatment of the principles of most slow light schemes and present the order-of-magnitude assessment of their performance for various applications. It ...
... extensive knowledge of optical physics, while the basics are not covered in sufficient detail. This tutorial is an attempt to provide the most basic treatment of the principles of most slow light schemes and present the order-of-magnitude assessment of their performance for various applications. It ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.