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The Investigation Of Continuous-Wave Four-Wave Mixing Based On Electromagnetically Induced Transparency Effect

Posted on:2006-06-12Degree:MasterType:Thesis
Country:ChinaCandidate:W Y WangFull Text:PDF
GTID:2178360182970644Subject:Physical Electronics
Abstract/Summary:PDF Full Text Request
Optical mixing has already developed into one of the central modern technology since observed by Franken firstly. Laser wavelength conversion is an important branch of laser and nonlinear optics domain .We can get many different wavelengths radiation by optical mixing, which can meet demands of various kinds of practical application. Four-Wave Mixing is one of the main technology of laser wavelength conversion. Four-Wave mixing has been getting people's attention by reason of its great theory value and extensive application prospect. Scientists have carried on a large amount of deep research on the theory and the experiments. But for various reasons, it has been unable to reach the ideal result all the time about four waves mixing efficiency. Electromagnetically induced transparency effect can enhance linear and non-linear medium susceptibilities by many orders of magnitude and make medium exhibit some unique optical nature. It has become a new focus of physics study. Recently, people, by understanding the electromagnetically induced transparent effect, apply it to Four-Wave Mixing and find that it can offer one new method to improve Four-Wave Mixing efficiency greatly. The work of this thesis can be divided into four parts: (1) We sum up the basic theories needed by Four-Wave Mixing study and give out various kinds of structure adopted frequently in Four-Wave Mixing study. (2) We study continuous-wave Four-Wave Mixing based on single electromagnetically induced transparency and focus on the relation among the intensity of FWM wave, the decay rate and the transmission distances. (3) After the study of continuous-wave Four-Wave Mixing based on single electromagnetically induced transparency, we analyze the continuous-wave Four-Wave Mixing based on double electromagnetically induced transparency. We focus on the relation among the intensity of FWM wave, the decay rate and the transmission distances as above. (4) We discuss the similarities and the differences between continuous-wave Four-Wave Mixing based on the single electromagnetically induced transparency and based on double electromagnetically induced transparency.
Keywords/Search Tags:optical mixing, four-wave mixing, electromagnetically induced transparency, interaction picture, quantum interference
PDF Full Text Request
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