SRON presentation - University of Groningen
... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
Theory of relativistic harmonic generation
... spectrum on a logarithmic scale, harmonic radiation at energies as high as 190 eV can be obtained at lower efficiency. Using the spectrograph focal-plane images we have measured the far field divergence of the harmonic beam. Figure 2 shows a three-dimensional harmonic spectrum, from which we can obt ...
... spectrum on a logarithmic scale, harmonic radiation at energies as high as 190 eV can be obtained at lower efficiency. Using the spectrograph focal-plane images we have measured the far field divergence of the harmonic beam. Figure 2 shows a three-dimensional harmonic spectrum, from which we can obt ...
Visible light optical coherence correlation spectroscopy
... range. The signal-to-noise ratio (SNR) has been increased by a factor of more than 25 due to a much increased NA allowing the extraction of the diffusion coefficient of gold NPs down to a size of 10 nm diameter. In addition, the auto-correlation model has been generalized to solutions hosting multip ...
... range. The signal-to-noise ratio (SNR) has been increased by a factor of more than 25 due to a much increased NA allowing the extraction of the diffusion coefficient of gold NPs down to a size of 10 nm diameter. In addition, the auto-correlation model has been generalized to solutions hosting multip ...
Efficient electromagnetically induced transparency COMMUNICATIONS
... many potential applications, for example frequency upconversion [7,8], lasers without inversion [9,10], and highgain phase conjugation [I 1,121. Recently, we observed EIT and enhanced four-wave mixing based on EIT in Pr3+ doped Y,SiO, (Pr:YSO) for the first time, where we observed a 15% decrease in ...
... many potential applications, for example frequency upconversion [7,8], lasers without inversion [9,10], and highgain phase conjugation [I 1,121. Recently, we observed EIT and enhanced four-wave mixing based on EIT in Pr3+ doped Y,SiO, (Pr:YSO) for the first time, where we observed a 15% decrease in ...
Dispersion Compensation using a Prism-pair
... Figure 2: Geometry of a prism-pair, defined using two degrees of freedom: the separation between the prisms R and the prism insertion H. beam, located after the 2nd prism where all the colors are parallel [29, 30]. This method results in somewhat complicated expressions for the optical path, leaving ...
... Figure 2: Geometry of a prism-pair, defined using two degrees of freedom: the separation between the prisms R and the prism insertion H. beam, located after the 2nd prism where all the colors are parallel [29, 30]. This method results in somewhat complicated expressions for the optical path, leaving ...
Reverse Iontophoresis - Faculty Server Contact
... Light is focused on some area of the body Light is absorbed and reflected in different ways Subcategories include near-infrared, midinfrared, and photoacoustic spectroscopy. ...
... Light is focused on some area of the body Light is absorbed and reflected in different ways Subcategories include near-infrared, midinfrared, and photoacoustic spectroscopy. ...
Lab 11: Index of Refraction (n) of Air
... The refractive index for most gases is close to 1. For air and other ideal gases, the difference between the refractive index and 1 is proportional to the pressure of the gas. Thus we define the refractive index of air n = 1 + k p, where p is the air pressure and k is an unknown constant. When the p ...
... The refractive index for most gases is close to 1. For air and other ideal gases, the difference between the refractive index and 1 is proportional to the pressure of the gas. Thus we define the refractive index of air n = 1 + k p, where p is the air pressure and k is an unknown constant. When the p ...
Optical Doppler Effect in a Medium C. H. Chang, J. H. Hsiao, and
... from the Pythagoras principles for the bent path of the EM waves. It is apparent that ∆t0 /∆t will depend on n in a complicated way and you can immediately detect the amused look from the audience. The time is ripe for you to point out the flaw in the above derivations: the refractive index seen by ...
... from the Pythagoras principles for the bent path of the EM waves. It is apparent that ∆t0 /∆t will depend on n in a complicated way and you can immediately detect the amused look from the audience. The time is ripe for you to point out the flaw in the above derivations: the refractive index seen by ...
optical coherence tomography
... were obtained from holographically recorded scattered field data nearly two decades ago.9,10 These first attempts, however, were not further extended at that time because no spatially coherent broadband light sources were available. Later, with the availability of spatially coherent broadband light ...
... were obtained from holographically recorded scattered field data nearly two decades ago.9,10 These first attempts, however, were not further extended at that time because no spatially coherent broadband light sources were available. Later, with the availability of spatially coherent broadband light ...
Quantitative Analysis Spectroscope #CQ$ 42581
... At some time or other, you may have noticed one or more rainbows projected onto a table or wall from the rim of a glass or jelly jar or crystal that was placed in the sun. Where did these colors come from? Why were they always in the same order with md on one side and blue on the other? Only a few h ...
... At some time or other, you may have noticed one or more rainbows projected onto a table or wall from the rim of a glass or jelly jar or crystal that was placed in the sun. Where did these colors come from? Why were they always in the same order with md on one side and blue on the other? Only a few h ...
Section 9.4: Light: Wave or Particle?
... Grimaldi’s beliefs about diffraction of light. Newton argued that Grimaldi’s observations of light diffraction were a result of collisions between light particles at the edges of the slit, and not a result of waves of light spreading out. By the time Newton wrote Opticks, his book on light, he expla ...
... Grimaldi’s beliefs about diffraction of light. Newton argued that Grimaldi’s observations of light diffraction were a result of collisions between light particles at the edges of the slit, and not a result of waves of light spreading out. By the time Newton wrote Opticks, his book on light, he expla ...
- vjs.ac.vn
... and bological molecule [4]. Recently, Ambardekar et al. [5], Deng et al. [6], Zhao [7] and Wang et al. [8] used a pulsed laser to generate the large gradient force, up to 2500 pN within a short duration, about picoseconds. Up to now, the optical trap using pulsed Gaussian beam and to optical trap us ...
... and bological molecule [4]. Recently, Ambardekar et al. [5], Deng et al. [6], Zhao [7] and Wang et al. [8] used a pulsed laser to generate the large gradient force, up to 2500 pN within a short duration, about picoseconds. Up to now, the optical trap using pulsed Gaussian beam and to optical trap us ...
Effect of ABCD transformations on beam paraxiality
... The foundations of the ABCD theory are in detail tackled in the most standard laser textbooks [3, 4]. The fulfillment of the PA is the basis of the development of the paraxial wave optics and derived branches of laser optics [3, 4]. It is within the PA framework that imaging properties of lenses and ...
... The foundations of the ABCD theory are in detail tackled in the most standard laser textbooks [3, 4]. The fulfillment of the PA is the basis of the development of the paraxial wave optics and derived branches of laser optics [3, 4]. It is within the PA framework that imaging properties of lenses and ...
- Europhysics News
... and (2) using the same wavelength for the reconstruction would not yield any magnification. Therefore Gabor suggested to use visible light for the reconstruction after scaling up all dimensions in the ratio of light waves to electron waves, that is, by about a factor 100,000. Although attempts at el ...
... and (2) using the same wavelength for the reconstruction would not yield any magnification. Therefore Gabor suggested to use visible light for the reconstruction after scaling up all dimensions in the ratio of light waves to electron waves, that is, by about a factor 100,000. Although attempts at el ...
E - Uni Regensburg/Physik
... Passive (self-) mode locking assume we have pulse: oscillates in resonator with frequency c/2L ⇒ can be used for self-modulation of resonator Several approaches: 1. Saturable absorber becomes transparent at high intensities ...
... Passive (self-) mode locking assume we have pulse: oscillates in resonator with frequency c/2L ⇒ can be used for self-modulation of resonator Several approaches: 1. Saturable absorber becomes transparent at high intensities ...
Michelson interferometer
... The mercury lamp has sufficient spatial coherence to allow a wide window opening. A diffusing screen M is placed after the filter in order to even the light intensity from the lamp. The screen acts as a secondary source that retains the phase relation of the outgoing wave from the source Q. Interfer ...
... The mercury lamp has sufficient spatial coherence to allow a wide window opening. A diffusing screen M is placed after the filter in order to even the light intensity from the lamp. The screen acts as a secondary source that retains the phase relation of the outgoing wave from the source Q. Interfer ...
Chapter Notes
... Step 1: Draw an incident ray parallel to the principal axis, the reflected ray of this will always be through the focus point. (note that the reflected ray had to be extended in order to go through the focus.) Step 2: Draw the next incident ray through the focus and point on the object into the mirr ...
... Step 1: Draw an incident ray parallel to the principal axis, the reflected ray of this will always be through the focus point. (note that the reflected ray had to be extended in order to go through the focus.) Step 2: Draw the next incident ray through the focus and point on the object into the mirr ...
interferometer_2014
... The secret to keeping costs down for this interferometer are: use a cheap laser; keep the number of precision mechanical mounts to a minimum; keep the spots small on the beam splitter and mirrors and then blow the beam up for viewing at the end. We use a laser pointer because you get a surprisingly ...
... The secret to keeping costs down for this interferometer are: use a cheap laser; keep the number of precision mechanical mounts to a minimum; keep the spots small on the beam splitter and mirrors and then blow the beam up for viewing at the end. We use a laser pointer because you get a surprisingly ...