Brewster s angle

Brewing water Brewster s angle Briatum Brick... 

Solid-State Lasers. Sohd-state lasers (37) use glassy or crystalline host materials containing some active species. The term soHd-state as used in connection with lasers does not imply semiconductors rather it appHes to soHd materials containing impurity ions. The impurity ions are typically ions of the transition metals, such as chromium, or ions of the rare-earth series, such as neodymium (see Lanthanides). Most often, the soHd material is in the form of a cylindrical rod with the ends poHshed flat and parallel, but a variety of other forms have been used, including slabs and cylindrical rods with the ends cut at Brewster s angle. 

Total reflectance is observed at angle 0B (Brewster s angle), which is related to the ratio of the n values of the polymer, and air, n2. 

Optical multipass cells have been used for the enhancement of CW Raman scattering(4) however, these cells are typically not well-suited for use with high power, pulsed lasers. A new multipass cell for use with a pulsed Nd YAG laser is proposed whereby the 1.06 micron laser output is admitted into a multipass cell cavity where it is partially converted to 532nm with a Brewster s angle cut second harmonic generating crystal The 532nm pulse is trapped in the mirrored cavity while the 1.06 micron pulse is dumped. This multipass cell concept has been demonstrated with the experimental set-up shown in figure 1. 

Brewster87 angle microscopy is a technique that exploits total reflection of monochromatic visible light at Brewster s angle, Eq. (2.14.31), from an interface Any small adsorbate at the interface—for example, the presence of parts of an adventitious monolayer of different refractive index—can be detected with great sensitivity as a change of reflectivity. 

Figure 4 shows the plots of the (a) reflectance and (b) transmittance ofthe SC film detected on irradiation with 445 nm light at all incident angles. Filled circles represent the results obtained on irradiation with s-polarized light, and open circles represent those with /i-polarized light. We can determine the Brewster s angle of the film/3 to be 58° in Fig. 4(a), and relative intensity of reflectance at /3 for the s- and p-polarizations is = R p)IRXP) = 0.186. 

Reflected light covers the entire angular range for refractive index ratios below and above unity. However, a distinct minimum is found for parallel polarized light at the so-called Brewster s angle which is given for a sphere by ... 

The Brewster s angle decreases with increasing refractive index ratio. 

The originally doubled, Nd-YAG (2 x Nd-YAG) laser beam at 532.0 nm is directed through a KG-3 filter to remove any 1.06-um energy. Part of this laser beam is used to excite the dye in the dye-laser amplifier cell. Usually about 30% of the originally doubled ND-YAG beam is used for dye pumping and the residual 70% is directed to the CARS test section. The dye amplifier cell (DC) is at Brewster s angle to maintain the horizontal polarization of the dye-laser beam. 

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