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Dichroism, laser induced

Doppler-Free Laser-Induced Dichroism and Birefringence... [Pg.140]

Fig. 2.45 Experimental arrangement for observation of Doppler-free laser-induced dichroism and birefringence [274]... Fig. 2.45 Experimental arrangement for observation of Doppler-free laser-induced dichroism and birefringence [274]...
C. Delsart, J.C. KeUer, Doppler-free laser induced dichroism and birefringence, in Laser Spectroscopy of Atoms and Molecules, ed. by H. Walther. Topics Appl. Phys., vol. 2... [Pg.692]

Fig.7.41a-c. Comparison of different techniques for measuring the neon transition ls2 — 2p2 at X = 588.2 nm (a) intracavity saturation spectroscopy (Lamb peak of the laser output Il cd) with Doppler-broadened background) (b) laser-induced dichroism and (c) laser-induced birefringence [7.72]... [Pg.494]

Fig. 10,45. Comparison of sa-turated absorption (a), laser-induced dichroism (b), and laser-induced birefringence spectrum (c) of the Is2-2p2 neon transition atx= 588.2 nm [10.62]... Fig. 10,45. Comparison of sa-turated absorption (a), laser-induced dichroism (b), and laser-induced birefringence spectrum (c) of the Is2-2p2 neon transition atx= 588.2 nm [10.62]...
C. Delsart, J.C. Keller "Doppler-Free Laser Induced Dichroism and Birefringence", in Ref. 1.11, p. 154... [Pg.679]

Sensitive Optical Detectors. More sensitive optical techniques that have been used with CE include fluorescence, refractive index, chemiluminescence, Raman spectrophotometry, and circular dichroism. The most sensitive optical detection method used in CE is laser-induced fluorescence (LIE), which is capable of detection limits in the 10 to 10" mol (or better) range. This detection mode is easily accomplished with analytes that are either easily labeled with a fluorescent substrate (e.g., intercalators for double-stranded DNA) or are naturally fluorescent (e.g., proteins or peptides containing tryptophan). CE systems have also been interfaced with mass spectrometers, and electrochemical detection methods have been developed, although such detectors must be isolated electrically from the electrophoretic voltages. [Pg.132]

Laser-Induced Circular Dichroism Resonance Enhancement... [Pg.40]

S. Cavalieri, M. Matera, F.S. Pavone, J. Zhang, P. Lambropoulos, T. Nakajima, High-sensitivity study of laser-induced birefringence and dichroism in the ionization continuum of cesium, Phys. Rev. A 47 (1993) 4219. [Pg.152]

The absorption of the C-form (Ac(X)) and E-form film (Ae(X.)) were measured using a UV-VIS-IR spectrophotometer (UV-SlOirc, Shimadzu Inc, Japan), which were shown in Fig.lOa. And the measurement of the photo-induced dichroism is performed by measuring the transmission spectra of the film for testing light polarized parallel (T//(A,)) and perpendicular (Ti(A,)) to the polarization direction of the exciting beam after the C-form film is excited by the linearly polarized 650 nm laser (shown in Fig.lla). [Pg.151]

FigiiFe 2-37. Thermal erasure of a laser-induced alignment in a PIOa 12 polyester demonstrated by the disappearance of the v(C=N) dichroism at the isotropization point (68 °C) (a) and the effect of irradiation, thermal erasure and reirradiation on the i (CsN) dichroism of the same polymer (b). [Pg.68]

The laser-induced fluorescence (LIF) of molecules can be used as a powerful probe of the photodynamics of the optically prepared molecule participating in intramolecular relaxation processes and in intermolecular processes. Fluorescence depolarization (and its ground state analogue, transient dichroism) offers a versatile probe of the orientational relaxation of the excited molecules and has found much application in studies of slip and stick boundary conditions and in tests of hydrodynamic descriptions (17,23-26). [Pg.341]

Figure 40 Thermal erasure of the laser-induced alignment in an SCLC polyester demonstrated by the disappearance of the v(teN) dichroism at the isotropization point (68 °C). Figure 40 Thermal erasure of the laser-induced alignment in an SCLC polyester demonstrated by the disappearance of the v(teN) dichroism at the isotropization point (68 °C).
The degree of microcrystallite orientation in crystalline films can be determined from careful analysis of the polarized Raman scattering line intensities. Since the induced polarization (P) and incident electric field (E) of the probe laser are three-dimensional vectors related by the polarizability tensor (o), individual elements of the tensor ( ij) be determined from the line intensities establishing molecular orientation in materials. Molecular chain orientation in polymer glasses has been demonstrated by Raman and infrared dichroism studies (12). [Pg.158]


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See also in sourсe #XX -- [ Pg.140 ]

See also in sourсe #XX -- [ Pg.492 ]

See also in sourсe #XX -- [ Pg.482 ]




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