Название: Photorefractive Materials for Dynamic Optical Recording
Автор: Jaime Frejlich
Издательство: John Wiley & Sons Limited
Жанр: Отраслевые издания
isbn: 9781119563761
isbn:
7 Chapter 7Figure 7.1 Schema of the experimental setup for electro‐optic coefficient meas...Figure 7.2 Evolution of the absorption coefficient in an undoped
crystal (la...Figure 7.3 Light‐induced absorption: transmitted versus incident irradianc...Figure 7.4 Light‐induced absorption of undoped (sample labeled BTO‐013) at Figure 7.5 Absorption coefficient‐thickness measured for three different BTO...Figure 7.6 Arrhenius curve dark conductivity for BTO:V. Data fitting to Eq. 7....Figure 7.7 Frequency‐dependence of the absolute value in Eq. 7.12 for differ...Figure 7.8 Schematic setup for the electric measurement of photoconductivity. ...Figure 7.9 Typical crystal schema, in the so‐called “Transverse Configuration”...Figure 7.10 Photocurrent (in pA) as a function of the incident irradiance on t...Figure 7.11 (Left) Photograph of the wavelength‐resolved photoconductivity exp...Figure 7.12 Transverse configuration: coefficient σ on a logarithmic scal...Figure 7.13 Detailed view of Fig. 7.12 showing a strong increase in σ for...Figure 7.14 σ (s m/ ) for thermally relaxed BTO:V ( ) and pre‐exposed to Figure 7.15 Longitudinal configuration schema showing an externally polarized Figure 7.16 Lateral view of the sandwiched BTO crystal plate showing the light...Figure 7.17 Plotting of with positive polarization (ranging from 0 to 500 V)...Figure 7.18 Light‐induced photoelectric conversion efficiency measured ( ) o...Figure 7.19 Comparative longitudinal (without external applied field) ( ) an...Figure 7.20 and measured on an ITO‐sandwiched BTO with mm and mm under...Figure 7.21 Modulated photocurrent data of an undoped crystal, with monochro...Figure 7.22 Plot of the Airy function (left), the equivalent Gaussian function...Figure 7.23 Plotting of in the plane, for (left) and (right).Figure 7.24 Schematic representation of an ac photocurrent produced by a sinus...Figure 7.25Figure 7.25 Stationary space‐charge field arising from a speckle pa...Figure 7.26 Plotting of in the plane for a speckle pattern of light vibrat...Figure 7.27 Simulation of the first harmonic photocurrent coefficient (in ar...Figure 7.28 Simulation of the first harmonic photocurrent coefficient as a f...Figure 7.29 Schematic representation of the experimental setup. A laser beam i...Figure 7.30 Optical sensor in metallic housing (from Fig. 7.29) showing the se...Figure 7.31Figure 7.31 Expanded front view of the photorefractive sensor housi...Figure 7.32 First harmonic photocurrent as function of reduced vibration ampli...Figure 7.33 Experimental first harmonic photocurrent measured on a CdTe:V ph...8 Chapter 8Figure 8.1 Holographic setup: a laser beam is divided by the beamsplitter BS, ...Figure 8.2 Energy transfer between interfering
= 633 nm beams in the two‐wav...Figure 8.3 Exponential gain coefficient as a function of the external incide...Figure 8.4 White light hologram erasure in :Fe: The erasure data ( ), measure...Figure 8.5 The graph shows the erasure of holograms in undoped BTO under 10–15...Figure 8.6 Hologram diffraction efficiency (arbitrary units) decay during nm...Figure 8.7 Diffraction efficiency ( in arbitrary units) during erasure of a h...Figure 8.8 Erasure of holograms in Pb‐doped BTO (same sample as in Fig. 8.6) r...Figure 8.9 Diffraction efficiency (recorded and measured using nm laser beam...Figure 8.10 Diffraction efficiency (au) as a function of time (seconds, in log...Figure 8.11 Hologram relaxation in the dark: exponential time as a function of...Figure 8.12 Photorefractive sensitivity СКАЧАТЬ