TITLE

Direct measurement of the refractive index profile of phase gratings, recorded in silver halide holographic materials by phase-contrast microscopy

AUTHOR(S)
Bánvász, I.
PUB. DATE
November 2003
SOURCE
Applied Physics Letters;11/24/2003, Vol. 83 Issue 21, p4282
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Plane-wave phase holograms recorded in Agfa-Gevaert 8E75HD emulsions and processed by the combination of AAC developer and the R-9 bleaching agent were studied by phase-contrast microscopy, using high-power immersion (100×) objective. Thus the modulation of the refractive index as a function of the bias exposure and the visibility of the recording interference pattern can also be determined. Measured diffraction efficiencies were compared to those predicted by coupled wave theory, using the measured refractive index modulations. Direct measurement of the phase profile of the gratings can be used for optimizing processing. © 2003 American Institute of Physics.
ACCESSION #
11447638

 

Related Articles

  • Modulators and switches are key to all-optical networks. Hecht, Jeff // Laser Focus World;Jun99, Vol. 35 Issue 6, p85 

    Offers a look at the fundamental concepts of modulation, switching and the technologies used in the implementation of fiberoptic systems. Description of kinds of modulators and types of modulation; Capability of electroabsorption modulators; Significance of optomechanical switches.

  • Experimental verification of frequency level-off of modulational instability in the minimum dispersion region. Ito, Fumihiko; Kitayama, Ken-ichi; Yoshinaga, Hisao // Applied Physics Letters;6/19/1989, Vol. 54 Issue 25, p2503 

    It is verified experimentally that the modulation frequency of modulational instability (MI) levels off to a certain upper limit by the fourth-order dispersion of the optical fiber as the pump wavelength approaches the zero-dispersion wavelength in the anomalous spectral region. Modulation...

  • Applied-voltage induced fatigue of lithium niobate waveguide. Nagata, Hirotoshi; Mitsugi, Naoki // Applied Physics Letters;1/15/1996, Vol. 68 Issue 3, p301 

    Demonstrates the operation of a z-cut lithium niobate optical modulator at 130 degrees Celsius with an accumulated direct current (dc) bias voltage of 4 and 8 V. Degree of dc drift accelerated phenomenon for the 8 V bias application; Observation of inversed domains along the Mac-Zehnder...

  • Simple method to diagnose the performance of electroabsorption modulators on InP using optical low-coherence reflectometry. Rao, E. V. K.; Gottesman, Y.; Provost, J. G. // Applied Physics Letters;8/26/2002, Vol. 81 Issue 9, p1552 

    This letter describes a judicious implication of optical low-coherence reflectometry (OLCR) measurements to evaluate the principal characteristics of an electroabsorption modulator with passive sections on either ends of its active layer fabricated on an InP substrate. We show here that careful...

  • Design of high recording density thin-film heads for particulate rigid disks. Ohura, M.; Tsuji, Y.; Kuwatsuka, S.; Hanazono, M.; Kawakami, K.; Saitoh, M. // Journal of Applied Physics;4/15/1987, Vol. 61 Issue 8, p4182 

    Describes the design and fabricating process of a novel structure head that was applied to disk systems. Relationship between writing field and overwrite modulation; Schematics of the novel fabricating process; Reason for the difficulty in measuring gap depth through the protection film optically.

  • Phase modulation atomic force microscope with true atomic resolution. Fukuma, Takeshi; Kilpatrick, Jason I.; Jarvis, Suzanne P. // Review of Scientific Instruments;Dec2006, Vol. 77 Issue 12, p123703 

    We have developed a dynamic force microscope (DFM) working in a novel operation mode which is referred to as phase modulation atomic force microscopy (PM-AFM). PM-AFM utilizes a fixed-frequency excitation signal to drive a cantilever, which ensures stable imaging even with occasional tip crash...

  • Nonlinear optics: Engineering Airy beams. Pasiskevicius, Valdas // Nature Photonics;Jul2009, Vol. 3 Issue 7, p374 

    The article discusses Airy beams which are used in several applications such as microscopy, microfluidics, and optical manipulation of objects such as cells. These beams, as stated, can also be generated by the Gaussian beam and with spatial phase modulators. It is stated that the Airy beam can...

  • Wide-bandwidth, high-efficiency reflection modulators using an unbalanced Fabry–Perot structure. Yan, R. H.; Simes, R. J.; Coldren, L. A. // Applied Physics Letters;11/6/1989, Vol. 55 Issue 19, p1946 

    A normally-on electroabsorptive multiple quantum well asymmetric Fabry–Perot reflection modulator with an on/off ratio of 22, insertion loss of 3.7 dB, and optical bandwidth of 3.4 nm for a voltage swing of 11 V has been measured. The trade-off between low insertion loss and high contrast...

  • Removing interference and optical feedback artifacts in atomic force microscopy measurements by application of high frequency laser current modulation. Kassies, Roel; van der Werf, Kees O.; Bennink, Martin L.; Otto, Cees // Review of Scientific Instruments;Mar2004, Vol. 75 Issue 3, p689 

    Atomic force microscopy measurements based on optical beam deflection can seriously be affected by two specific types of artifacts. Disturbances of the first type are caused by interference on the quadrant photodiode between the beam reflected directly from the cantilever and stray light from...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics