dc.contributor.author |
Litty, Irimpan |
|
dc.contributor.author |
Deepthy, A |
|
dc.contributor.author |
Bindu, Krishnan |
|
dc.contributor.author |
Nampoori, V P N |
|
dc.contributor.author |
Radhakrishnan, P |
|
dc.date.accessioned |
2010-12-17T06:22:45Z |
|
dc.date.available |
2010-12-17T06:22:45Z |
|
dc.date.issued |
2008 |
|
dc.identifier.other |
Appl. Phys. B 90, 547–556 (2008) |
|
dc.identifier.uri |
http://dyuthi.cusat.ac.in/xmlui/purl/2046 |
|
dc.description.abstract |
In the present work, we have investigated the nonlinear
optical properties of self-assembled films formed from
ZnO colloidal spheres by z-scan technique. The sign of the nonlinear
component of refractive index of the material remains
the same; however, a switching from reverse saturable absorption
to saturable absorption has been observed as the material
changes from colloid to self-assembled film. These different
nonlinear characteristics can be mainly attributed to ZnO defect
states and electronic effects when the colloidal solution is
transformed into self-assembled monolayers. We investigated
the intensity, wavelength and size dependence of saturable and
reverse saturable absorption of ZnO self-assembled films and
colloids. Values of the imaginary part of third-order susceptibility
are calculated for particles of size in the range 20–300 nm
at different intensity levels ranging from 40 to 325MW/cm2
within the wavelength range of 450–650 nm. |
en_US |
dc.description.sponsorship |
Cochin University of Science and Technology,Amrita Institute of Medical Sciences & Centre for Materials for Electronics Technology. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer |
en_US |
dc.subject |
Nonlinear optical properties |
en_US |
dc.subject |
Self-assembled films |
en_US |
dc.subject |
Photonics |
en_US |
dc.subject |
ZnO |
en_US |
dc.title |
Nonlinear optical characteristics of self-assembled films of ZnO |
en_US |
dc.type |
Working Paper |
en_US |
dc.contributor.faculty |
Technology |
en_US |
dc.identifier.url |
DOI: 10.1007/s00340-007-2886-1 |
en_US |