Linearly polarized mode

Finally, we realize that p, the cholesteric medium becomes a simple birefringent medium, and the waves propagating along the zaxis have two linearly polarized modes. TTie last three combinations in Table I can then be written as... 

LP linearly polarized (mode) linear programming linking protection log-periodic... 

Formation of the PEG and microcavity resonance was also confirmed by numerical modeling. Figure 52 shows the transmission spectra of reference (a) and defected (b) samples, calculated using the transfer-matrix technique. Transmission for TE (broken line) and TM (solid line) linearly polarized modes was considered separately in anticipation that the absence of some oriented rods in the defected sample would result in different conditions for the propagation of TE and TM modes. The calculated transmission spectrum of the reference sample is shown in Fig. 52a. 

Linearly polarized, near-diffraction-hmited, mode-locked 1319 and 1064 nm pulse trains are generated in separate dual-head, diode-pumped resonators. Each 2-rod resonator incorporates fiber-coupled diode lasers to end-pump the rods, and features intracavity birefringence compensation. The pulses are stabilized to a 1 GHz bandwidth. Timing jitter is actively controlled to < 150 ps. Models indicate that for the mode-locked pulses, relative timing jitter of 200 ps between the lasers causes <5% reduction in SFG conversion efficiency. 

Figure 4.6 shows an apparatus for the fluorescence depolarization measurement. The linearly polarized excitation pulse from a mode-locked Ti-Sapphire laser illuminated a polymer brush sample through a microscope objective. The fluorescence from a specimen was collected by the same objective and input to a polarizing beam splitter to detect 7 and I by photomultipliers (PMTs). The photon signal from the PMT was fed to a time-correlated single photon counting electronics to obtain the time profiles of 7 and I simultaneously. The experimental data of the fluorescence anisotropy was fitted to a double exponential function. 

Fig. 13.4 Profiles of the intensities l J2, Ey 2, and EZ 2 of the Cartesian coordinate components of the electric field in a fundamental mode with quasi linear polarization. The insets show the inner parts of the profiles, which correspond to the field inside the fiber. The parameters used a 200 nm, X 1,300 nm, 1.4469, n2 1. Reprinted from Ref. 61 with permission. 2008 Elsevier...

The two linearly polarized fields are generated by rf currents in two pairs of wires oriented parallel to B0 and connected to form two half-loops which cross each other perpendicularly. A cylindrical cavity operating in the TE112 mode was considered to be most suitable for this purpose. A schematic diagram of the cavity is shown in Fig. 6. 

In the / -spectrum of the ZnO thin film, a similar plateau as in the 3 -spectrum of the ZnO bulk sample is present. However, the phonon modes of the sapphire substrate introduce additional features, for example atw 510, 630, and "-900 cm 1 [38,123]. The spectral feature at w 610 cm-1 is called the Berreman resonance, which is related to the excitation of surface polari-tons of transverse magnetic character at the boundary of two media [73]. In the spectral region of the Berreman resonance, IRSE provides high sensitivity to the A (LO)-mode parameters. For (OOOl)-oriented surfaces of crystals with wurtzite structure, linear-polarization-dependent spectroscopic... 

Special techniques were developed for the analysis of nucleotide phosphates. For the separation of these compounds, either dynamic pH gradient (Sustacek et al., 1989) or linear polyacrylamide-coated capillaries (Takigiku and Schneider, 1991) were used. In the latter case separations were done in the reversed-polarity mode (i.e., from cathode to anode). 

One simple method for varying the coupling is to construct the resonator from two polarizers. We can show (Tudisco, 1988) that the finesse of such a resonator is proportional to cos, where is the relative orientation of the two polarizers. This device is the quasioptical analog of the cavity coupling scheme of Lebedev (1990). There are several limitations to this scheme as pointed out by the author, namely, the radiation must be linearly polarized, which complicates transmit-receive duplexing in a reflection mode spectrometer on resonance, the power minimum occurs in transmission, which precludes using the device in a reflection mode spectrometer if we wish to work with low background levels. 

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