WDM Concepts and Components
... • Only one (DFB or DBR) laser that has grating filter in the lasing cavity • Wavelength is tuned by either changing the temperature of the grating (0.1 nm/OC) • Or by altering the injection current into the passive section (0.006 nm/mA) • The tuning range decreases with the optical output power ...
... • Only one (DFB or DBR) laser that has grating filter in the lasing cavity • Wavelength is tuned by either changing the temperature of the grating (0.1 nm/OC) • Or by altering the injection current into the passive section (0.006 nm/mA) • The tuning range decreases with the optical output power ...
Nondegenerate optical Kerr effect in semiconductors
... We use the 2-color Z-scan [7], [16] to measure the nondegenerate n 2 in ZnSe and ZnS. A Q-switched and modelocked Nd:YAG laser is used to generate single tp::::: 83 ps (FWHM) pulses at >. = 1.06 J.Lm as the excitation beam. Simultaneously, the second-harmonic of the same laser at >. = 532 nm serves ...
... We use the 2-color Z-scan [7], [16] to measure the nondegenerate n 2 in ZnSe and ZnS. A Q-switched and modelocked Nd:YAG laser is used to generate single tp::::: 83 ps (FWHM) pulses at >. = 1.06 J.Lm as the excitation beam. Simultaneously, the second-harmonic of the same laser at >. = 532 nm serves ...
Optical Gradient Forces of Strongly Localized Fields
... aI0 v 2 2p located at r R, thus defining an approximately cylindrical potential well of diameter 2R and depth DU . s2pd3y2 aI0 v 3 , Fm Dr. In the intermediate region the maximal force crosses over continuously from the R 3 scaling for small particles to be size independent for very large particle ...
... aI0 v 2 2p located at r R, thus defining an approximately cylindrical potential well of diameter 2R and depth DU . s2pd3y2 aI0 v 3 , Fm Dr. In the intermediate region the maximal force crosses over continuously from the R 3 scaling for small particles to be size independent for very large particle ...
Pulse Propagation in Optical Fibers
... The optical fibers are completely immune to electromagnetic interference as they are made of dielectric material capable of transmitting pulses of light, which means that data is not corrupted during ...
... The optical fibers are completely immune to electromagnetic interference as they are made of dielectric material capable of transmitting pulses of light, which means that data is not corrupted during ...
Light Scattering Spectroscopy
... • Angle: small vs. large particles • Spectrum: size and refractive index • Advantages: • Strong signal - allows use of lower cost components components. • Sensitive to important chromophores that are not fluorescent: e.g., hemoglobin. • Sensitive to both tissue structure and biochemistry. • can dist ...
... • Angle: small vs. large particles • Spectrum: size and refractive index • Advantages: • Strong signal - allows use of lower cost components components. • Sensitive to important chromophores that are not fluorescent: e.g., hemoglobin. • Sensitive to both tissue structure and biochemistry. • can dist ...
Microscope
... 4. Select the objective to be used. It is better to begin examination with 10x objective. The 10x objective can be used for adjusting the illumination and for searching the specimen before using a high power lens. 5. Bring the objective as close as possible to the slide preparation and while vi ...
... 4. Select the objective to be used. It is better to begin examination with 10x objective. The 10x objective can be used for adjusting the illumination and for searching the specimen before using a high power lens. 5. Bring the objective as close as possible to the slide preparation and while vi ...
OPTICAL PROPERTIES OF METALS
... Beer’s Law, or Bouger’s Law, or Beer-Lambert’s Law, or Bouger-LambertBeer’s Law (too many names for just one law, so do not get misguided by different names combinations in the literature - they all refer to the same law!) • Thus, if we plot -ln(I/I0) vs. x, we can find α from the angle. Depending o ...
... Beer’s Law, or Bouger’s Law, or Beer-Lambert’s Law, or Bouger-LambertBeer’s Law (too many names for just one law, so do not get misguided by different names combinations in the literature - they all refer to the same law!) • Thus, if we plot -ln(I/I0) vs. x, we can find α from the angle. Depending o ...
Observation of coupling between surface plasmons in index
... corresponds to the normal situation, where the resonant channel is out of phase with the direct channel. This choice does not affect the values of the other fit parameters significantly. The crosses in Fig. 3共a兲 refer to the frequencies of the transmission maxima determined directly from the experim ...
... corresponds to the normal situation, where the resonant channel is out of phase with the direct channel. This choice does not affect the values of the other fit parameters significantly. The crosses in Fig. 3共a兲 refer to the frequencies of the transmission maxima determined directly from the experim ...
Dispersion staining
The optical properties of all liquid and solid materials change as a function of the wavelength of light used to measure them. This change as a function of wavelength is called the dispersion of the optical properties. The graph created by plotting the optical property of interest by the wavelength at which it is measured is called a dispersion curve.The dispersion staining is an analytical technique used in light microscopy that takes advantage of the differences in the dispersion curve of the refractive index of an unknown material relative to a standard material with a known dispersion curve to identify or characterize that unknown material. These differences become manifest as a color when the two dispersion curves intersect for some visible wavelength. This is an optical staining technique and requires no stains or dyes to produce the color. Its primary use today is in the conformation of the presence of asbestos in construction materials but it has many other applications.