Download or read book Mid infrared Light Generation by Nonlinear Optical Frequency Conversion in Intersubband InGaAs written by Herman Chung-Kang Chui and published by . This book was released on 1994 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Optical Frequency Conversion to from the Mid infrared in Ti PPLN Waveguides for Spectroscopy and Free space Optical Communication written by Kai-Daniel Büchter and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2011 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-infrared (MIR) sources and detectors are of strong interest. Due to a lack of favorable lasers, frequency conversion using nonlinear optical difference-frequency generation (DFG) has been a popular means to generate MIR radiation using near-IR (NIR) sources. On the detector side, optical frequency conversion can be used to realize a hybrid up-conversion detector (UCD). In this case, radiation is converted from the MIR to the NIR or even visible, where detectors with exceptional properties are available. Such devices, based on Ti-indiffused waveguides in periodically poled Lithium Niobate, were investigated. Over 10 mW of tunable radiation at either 3.4 m (3.8 m) were generated, using pump lasers at 1064 nm (1100 nm) and 1550 nm wavelength. Similarly, UCDs based on either DFG or SFG were thoroughly characterized, which convert radiation within a few nm bandwidth around a design wavelength, and can be temperature-tuned by tens of nm. The devices were combined in order to realize free-space optical transmission lines. This way, MIR-spectroscopy of methane was performed with NIR instrumentation only. Also, it was shown that transmission through turbulent channels can be improved.
Download or read book Nonlinear Optical Frequency Conversion Devices Based on Intersubband Transitions in Semiconductor Quantum Wells written by Gary Leonard Woods and published by . This book was released on 1997 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Optical Frequency Conversion to from the Mid infrared in Ti PPLN Waveguides for Spectroscopy and Free space Optical Communication written by Kai-Daniel Büchter and published by . This book was released on 2011 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mid Infrared Coherent Sources and Applications written by Majid Ebrahim-Zadeh and published by Springer Science & Business Media. This book was released on 2008-01-02 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering fundamental principles and the state of the art, this is a collection of reviews from experts in mid-infrared (mid-IR) coherent sources. Among the sources covered are optical parametric oscillators, difference frequency generators, and the most recent broadband crystalline, quantum cascade, and fiber lasers. The authors show how advances in mid-IR science and technology make these sources indispensable for a variety of applications.
Download or read book Quantum Well Above barrier States and Short Wavelength Intersubband Transitions in InGaAs A1GaAs Quantum Wells written by Baegin Sung and published by . This book was released on 1998 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1995 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Infrared Generation written by Roshan Lal Aggarwal and published by Springer. This book was released on 1977 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quasi phasematched Waveguides for Infrared Nonlinear Optics Using GaAs Ge GaAs Heteroepitaxy written by Christopher Barrowclough Ebert and published by . This book was released on 1998 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thirty fourth Annual Report on Materials Research at Stanford University January 1 1994 August 31 1994 written by Stanford University. Center for Materials Research and published by . This book was released on 1994 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Normal Incidence Intersubband Transition in the Valence Band of InGaAs AlGaAs Quantum Wells written by Bartev Jirayre Vartanian and published by . This book was released on 1995 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parametric Infrared Generation written by Vincent Kemlin and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation deals with the generation of parametric light in the range 1 to 12 μm. Parametric infrared generation turns out to be a challenge at the interface between the fields of nonlinear optics and materials science embodied by the two approaches used to achieve efficient frequency conversion. Birefringent Phase-Matching (BPM) in anisotropic materials has been the traditional solution used in most frequency converter devices. But since the 90's, the quick success of microstructured materials has paved the way for Quasi-Phase-Matching (QPM) even in isotropic materials, leading to a renewed interest in Optical Parametric Oscillators (OPO). The high degree of engineering offered by this technology is now widely recognized as a key competitive advantage. We obtained original results concerning parametric infrared generation using BPM as well as QPM.We have built the first OPO pumped by a 1.064 μm Nd:YAG laser and based on a 5-mm-thick crystal of 5%MgO:PPLN cut as a partial cylinder. This OPO combines a wide and continuous tunability over the range 1.4 μm - 4.4 μm with a good conversion efficiency, up to 30%. Despite the need to resort to pump intensities almost an order of magnitude higher than in a slab OPO, we have shown that the energetical performance of a partial cylinder OPO is now equivalent to that of a slab OPO besides a wider tunability that can be continuously addressed. When the same Nd:YAG laser pumps two such independent OPOs in parallel, we dispose of a highly versatile QPM dual wavelength source with two widely and independently tunable beams. We have built this unique source allowing versatile Difference Frequency Generation (DFG) towards the mid- and far- infrared. We carried out the first BPM DFG experiments with this source in a CdSe slab oriented for angular noncritical phase-matching at two different pump wavelengths, respectively 2.72 μm and 2.79 μm. The second set of DFG experiments were performed in a CdSe crystal cut and polished as a 5-mm-diameter full cylinder. Using a pump wavelength of 2.79 μm, we were able to tune the DFG wavelength from 8.3 μm up to 10.3 μm by rotating the crystal over an angular range of 18°. Contrary to all the BPM DFG experiments reported so far in the single crystal CdSe, tuning was achieved while keeping normal incidence of both the incident and generated beams in the crystal. The implementation of spectral narrowing techniques is already anticipated and will contribute to more accurate measurements of the phase-matching directions of a crystal as well as to a higher DFG conversion efficiency.These experiments with our dual wavelength source are preliminary and encouraging validations of our capability of performing DFG in small crystals and at any pump wavelength between 1.4 μm and 3.5 μm. Even though we investigated the promises held by CdSiP2 when it is only pumped with a Nd:YAG laser at 1.064 μm, there is tremendous prospect in terms of tunable infrared generation between 3.5 μm and 8 μm when this crystal is pumped around 2.4 μm. Such early demonstrations will be highly valuable for future applications requiring compact and tunable sources spanning the infrared spectrum. From a more fundamental point of view, performing DFG experiments at different pump wavelengths in the mid-infrared can lead to a highly accurate determination of the values of the refractive indices of a nonlinear crystal. In this dissertation, we have cast the first stone of a method that leads to the determination of the values of the refractive indices of a nonlinear crystal in the mid- to far- infrared. This new method is based on the unique measurements of the DFG phase-matching angles in spheres or cylinders, and should contribute to further advances in the field of phase-matching metrology.
Download or read book Resonant Parametric Generation of Infrared Radiation on Intersubband Transitions in Low Dimensional Semiconductor Heterostructures written by A. A. Belyanin and published by . This book was released on 2001 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new scheme for generation of coherent radiantion on the intersubband transition without population inversion between subbands is presented. The scheme is based on the resonant nonlinear mixing of the optical laser fields on the two interband transitions which are generated in the same active region and serve as a coherent drive for the infrared field. This mechanism for frequency self-conversion can work efficiently at room temperature and with injection current pumping. Due to the parametric nature of infrared generation the proposed inversionless scheme is especially promising for long-wvavelength (far-infrared) operation.
Download or read book Far infrared Generation by Nonlinear Optical Interaction written by Dillard Wayne Faries and published by . This book was released on 1969 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Nonlinear Optical Frequency Conversion written by Norman Menyuk and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear optical techniques have been evaluated for the conversion of out-of-band diode laser radiation into the 2- to 5- micrometers region, It is concluded that frequency conversion using an optical parametric oscillator is the preferred nonlinear approach and that ZnGeP2 is the most promising nonlinear material. Direct diode or diode array pumping of the nonlinear material may require semiconductor laser operation in the 1.7- to 2.0 micrometers region and will entail substantial increases in the peak power and beam quality in comparison to that obtainable from present devices. Diodes pumped solid state lasers might provide a reasonable near-term solution to the pump source requirements.
Download or read book Frequency Conversion in New Nonlinear Optical Materials written by James Thomas Murray and published by . This book was released on 1992 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
