|
Showing 1 - 4 of
4 matches in All Departments
The invention ofthe laser 25years ago resulted in powerfullight
sources which led to the observation of unexpected and striking
phenomena. New fields of science such as holography and nonlinear
optics developed constituting the basis of this volume. The
classical principle of linear superposition of light wavesdoes not
hold anymore. Two laser beams crossing in a suitable material may
produce a set of new beams with different directions and
frequencies. The interaction of light waves can be understood by
considering the optical grating structures which develop in the
overlap region. The optical properties of matter become spatially
modulated in the interference region of two light waves. Permanent
holographic gratings have been produced in this way by photographic
processes for many years. In contrast, dynamic or transient
gratings disappear after the inducing light source, usually a
laser, has been switched off. The grating amplitude is controlled
by the light intensity. Dynamic gratings have been induced in a
large number ofsolids, liquids, and gases, and are detected by
diffraction, 'forced light scattering' of a third probing beam, or
by self-diffraction of the light waves inducing the grating. The
combined interference and diffraction effect corresponds to
four-wave mixing (FWM) in the language of nonlinear optics. The
process is called degenerate ifthe frequenciesofthe three incident
wavesand the scattered wave are equal. Degenerate four-wave mixing
(DFWM) is a simple method to achieve phase conjugation, i.e. to
generate a wave which propagates time reversed with respect to an
incident wave.
For students of physics in their foundation and main study courses,
this book is an accompanying text above all for lectures and
placements in elementary and higher experimental physics in the
field of optics. Along with the most significant theoretic
principles of optics, particular emphasis is given to representing
the experimental and application-related aspects of the science:
both electromagnetic waves (luminous, laser and x-ray radiation)
and waves of matter/particles (electrons, neutrons and atoms).More
information
|
You may like...
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
|