Academic literature on the topic 'Dual-wavelength pumped'

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Journal articles on the topic "Dual-wavelength pumped"

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Nakata, Tsuneo, and Fumihiko Kannari. "Dual-wavelength-pumped Raman-resonant four-wave mixing." Journal of the Optical Society of America B 10, no. 10 (October 1, 1993): 1870. http://dx.doi.org/10.1364/josab.10.001870.

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Wang, Shunyan, Kang Dai, Juhong Han, Guofei An, Wei Zhang, Qiang Yu, He Cai, et al. "Dual-wavelength end-pumped Rb-Cs vapor lasers." Applied Optics 57, no. 32 (November 5, 2018): 9562. http://dx.doi.org/10.1364/ao.57.009562.

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Xia, Jing, Yanfei Lü, Huilong Liu, and Xiaoyun Pu. "Diode-pumped Pr3+:LiYF4 visible dual-wavelength laser." Optics Communications 334 (January 2015): 160–63. http://dx.doi.org/10.1016/j.optcom.2014.08.032.

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Song, Yan-Jie, Nan Zong, Zhong-Zheng Chen, Yu Shen, Lu-Na Zhang, Yong Bo, and Qin-Jun Peng. "Experimental and theoretical investigation of a cryogenically cooled Nd:YAG laser with dual-wavelength at 946 and 1061 nm." Laser Physics Letters 20, no. 2 (December 30, 2022): 025701. http://dx.doi.org/10.1088/1612-202x/acab56.

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Abstract A diode-end-pumped cryogenically cooled Nd:YAG laser is demonstrated with dual-wavelengths at 946 nm and 1061 nm. As temperature varies from 300 K to 190 K, a transition occur from single-wavelength at 946 nm to dual-wavelength at 946 nm and 1061 nm. Only the line at 1061 nm oscillated for the temperature less than 180 K. Moreover, a theoretical simulation of oscillation condition at cryogenic temperatures is implemented, leading a deep insight into the physical mechanism of dual-wavelength generation.
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Reeves-Hall, P. C., D. A. Chestnut, C. J. S. De Matos, and J. R. Taylor. "Dual wavelength pumped L- and U-band Raman amplifier." Electronics Letters 37, no. 14 (2001): 883. http://dx.doi.org/10.1049/el:20010595.

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Ramaiah-Badarla, V., S. Chaitanya Kumar, and M. Ebrahim-Zadeh. "Fiber-laser-pumped, dual-wavelength, picosecond optical parametric oscillator." Optics Letters 39, no. 9 (April 28, 2014): 2739. http://dx.doi.org/10.1364/ol.39.002739.

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Gao, Jun, PengFei Sun, XinBing Wang, and DuLuo Zuo. "Modeling of a dual-wavelength pumped metastable argon laser." Laser Physics Letters 14, no. 3 (February 7, 2017): 035001. http://dx.doi.org/10.1088/1612-202x/aa5b10.

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Zhang, Jing, Xihong Fu, Pei Zhai, Jing Xia, and Shutao Li. "A diode-pumped Nd:YAlO3 dual-wavelength yellow light source." Laser Physics 23, no. 11 (September 25, 2013): 115001. http://dx.doi.org/10.1088/1054-660x/23/11/115001.

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Kaspi, Ron, Andrew P. Ongstad, Gregory C. Dente, Michael L. Tilton, and Anna Tauke-Pedretti. "Optically Pumped Midinfrared Laser With Simultaneous Dual-Wavelength Emission." IEEE Photonics Technology Letters 20, no. 17 (2008): 1467–69. http://dx.doi.org/10.1109/lpt.2008.927900.

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Tauke-Pedretti, A., A. P. Ongstad, M. L. Tilton, J. C. Chavez, and R. Kaspi. "Power Sharing in Dual-Wavelength Optically Pumped Midinfrared Laser." IEEE Photonics Technology Letters 21, no. 14 (July 2009): 1011–13. http://dx.doi.org/10.1109/lpt.2009.2021955.

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Dissertations / Theses on the topic "Dual-wavelength pumped"

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"Dual-Wavelength Internal-Optically-Pumped Semiconductor Laser Diodes." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.14387.

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abstract: Dual-wavelength laser sources have various existing and potential applications in wavelength division multiplexing, differential techniques in spectroscopy for chemical sensing, multiple-wavelength interferometry, terahertz-wave generation, microelectromechanical systems, and microfluidic lab-on-chip systems. In the drive for ever smaller and increasingly mobile electronic devices, dual-wavelength coherent light output from a single semiconductor laser diode would enable further advances and deployment of these technologies. The output of conventional laser diodes is however limited to a single wavelength band with a few subsequent lasing modes depending on the device design. This thesis investigates a novel semiconductor laser device design with a single cavity waveguide capable of dual-wavelength laser output with large spectral separation. The novel dual-wavelength semiconductor laser diode uses two shorter- and longer-wavelength active regions that have separate electron and hole quasi-Fermi energy levels and carrier distributions. The shorter-wavelength active region is based on electrical injection as in conventional laser diodes, and the longer-wavelength active region is then pumped optically by the internal optical field of the shorter-wavelength laser mode, resulting in stable dual-wavelength laser emission at two different wavelengths quite far apart. Different designs of the device are studied using a theoretical model developed in this work to describe the internal optical pumping scheme. The carrier transport and separation of the quasi-Fermi distributions are then modeled using a software package that solves Poisson's equation and the continuity equations to simulate semiconductor devices. Three different designs are grown using molecular beam epitaxy, and broad-area-contact laser diodes are processed using conventional methods. The modeling and experimental results of the first generation design indicate that the optical confinement factor of the longer-wavelength active region is a critical element in realizing dual-wavelength laser output. The modeling predicts lower laser thresholds for the second and third generation designs; however, the experimental results of the second and third generation devices confirm challenges related to the epitaxial growth of the structures in eventually demonstrating dual-wavelength laser output.
Dissertation/Thesis
Ph.D. Electrical Engineering 2011
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Henderson-Sapir, Ori. "Development of dual-wavelength pumped mid-infrared fibre laser." Thesis, 2015. http://hdl.handle.net/2440/103471.

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There is an urgent need for efficient and compact sources of coherent mid-infrared wavelength radiation (3-5 μm). Cost-effective and bright mid-infrared sources will lead to exciting new sensing applications, ranging from the remote sensing of greenhouse gases, such as CO₂ and methane, to analysis of trace gases in exhaled breath for disease marker identification. The last decade has seen a continuing increase in the output power of various types of mid-infrared sources, such as optical parametric oscillators and amplifiers, quantum cascade lasers and fibre lasers. However, advances in brightness, efficiency, peak power and tunability are still necessary for many applications. In this thesis, we describe a new concept for a fibre laser based on Er³⁺ doped ZBLAN glass that operates in the mid-infrared with lasing centred around 3.5 μm. We used a novel dual-wavelength pumping (DWP) scheme to achieve world-leading efficiency for this material and an output power of 260 mW. The DWP technique uses long-lived excited states in our Er³⁺ ion doped ZBLAN glass gain medium to improve the Stokes efficiency. A low power, 985 nm pump source excites ions from the ⁴I₁₅ ̷₂ ground state to the long lived ⁴I₁₁ ̷₂ state. A large fraction of the ion population can be stored in this level because of its long lifetime, creating a \virtual ground state." A concurrent 1973 nm pump source is then used as the main pump source. This pump excites the ions further to the upper laser level ⁴F₉ ̷₂. Post lasing, the 1973 nm pump cycles the ions between the \virtual ground state" at ⁴I₁₁ ̷₂ and the ⁴F₉ ̷₂ level. The first pump at 985 nm maintains the population in the “virtual ground" as this population is diminished by spontaneous emission and energy-transfer processes, which eject ions from the lasing cycle. In this thesis, we review the literature and the current state-of-the-art in mid-infrared fibre lasers. An overview of the spectroscopic properties of Er³⁺:ZBLAN relevant to mid-infrared operation is presented. The difficulties and issues associated with the creation of mid-infrared radiation are discussed and our spectroscopic investigations of ZBLAN glass and glass fibres are summarised. Multiple wavelengths were used as pump sources for our DWP laser. Our investigation of the optimal wavelength for the DWP technique and the development of suitable sources is described as well. The 3.5 μm laser system is discussed, including the full characterisation of the laser. The thesis is concluded with a summary of the results and an outlook for the future.
Thesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2015.
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Bawden, Nathaniel. "Pulsed Fibre Lasers Beyond 3 Micron." Thesis, 2021. https://hdl.handle.net/2440/134209.

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The mid-infrared spectral region between 3 μm and 5 μm contains the absorption features of many different organic and biological compounds, which leads to a wide range of potential applications for sources of mid-infrared radiation. Historically, this part of the spectrum has been difficult to access, which has limited the development of these applications. Fibre based lasers offer long gain lengths, effective thermal management and robustness. This thesis explores pulsed operation of fibre lasers using the ⁴F(9/2) → ⁴I(9/2) transition in erbium, which is currently the only fibre laser source to directly generate light in the 3.4 μm to 3.8 μm region. This thesis explores lasers that generate pulses in the nanonsecond, picosecond and femtosecond regimes through use of both Q-switching and mode-locking techniques. The Q-switched systems utilise acousto-optic devices to modulate the resonator losses and produce pulsed laser output. These systems included the first actively Q-switched fibre laser at 3.5 μm. Mode-locked pulses with electronically tunable wavelength were generated via the frequency shifted feedback technique, using an acousto-optic tunable filter. The non-linear polarisation rotation method was used to generate ultrafast mode-locked pulses. This was the first time that this technique had been used on the 3.5 μm erbium transition, which resulted in the first subpicosecond pulses from a fibre laser at this wavelength, with a duration of 580 fs and an energy of 3.2 nJ. The resulting peak power of 5.5kW is the highest of any 3.5 μm fibre laser system. The ultrashort pulses are used to demonstrate non-linear spectral broadening in a highly non-linear fibre. This thesis concludes with a summary of results and suggestions for future work.
Thesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2021
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Book chapters on the topic "Dual-wavelength pumped"

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Brckmann, Andr, Guido Boyen, Paul Urquhart, Amaia Legarrea, Nuria Miguel, Bruno Bristiel, and Juan Mir. "Dual-Wavelength Pumped Dispersion-Compensating Fibre Raman Amplifiers." In Advances in Optical Amplifiers. InTech, 2011. http://dx.doi.org/10.5772/14003.

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Conference papers on the topic "Dual-wavelength pumped"

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Nadimi, M., and A. Major. "Diode-Pumped Dual-Wavelength Nd:GVO4 Laser." In 2019 Photonics North (PN). IEEE, 2019. http://dx.doi.org/10.1109/pn.2019.8819547.

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Khodasevich, Mikhail A., George V. Sinitsyn, and Yury A. Varaksa. "Bidirectional dual wavelength pumped EDFA: optimization of pump conditions." In SPIE Proceedings, edited by Nikolay N. Rosanov. SPIE, 2007. http://dx.doi.org/10.1117/12.740163.

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Akbari, Reza, Jun Xu, Xiaodong Xu, and Arkady Major. "Diode-pumped Yb:YAP laser with dual-wavelength output." In Solid State Lasers XXX: Technology and Devices, edited by W. Andrew Clarkson and Ramesh K. Shori. SPIE, 2021. http://dx.doi.org/10.1117/12.2582441.

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Hofrichter, Jens, Oded Raz, Liu Liu, Geert Morthier, Folkert Horst, Philippe Regreny, Tjibbe De Vries, Harm J. S. Dorren, and Bert J. Offrein. "Dual wavelength conversion using electrically pumped microdisc lasers." In 2011 IEEE 8th International Conference on Group IV Photonics (GFP). IEEE, 2011. http://dx.doi.org/10.1109/group4.2011.6053754.

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Uchida, Atsushi, Masahiro Takeoka, and Fumihiko Kannari. "Dual-wavelength-pumped cascaded fiber-Raman converters for wide-range wavelength conversion." In Photonics West '97, edited by Usamah O. Farrukh and Santanu Basu. SPIE, 1997. http://dx.doi.org/10.1117/12.273672.

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Reeves-Hall, P. C., D. A. Chestnut, C. J. S. De Matos, and J. R. Taylor. "Dual Wavelength Pumped L and U-Band Raman Amplifier." In Optical Amplifiers and Their Applications. Washington, D.C.: OSA, 2001. http://dx.doi.org/10.1364/oaa.2001.omc4.

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Akbari, R., H. Zhao, and A. Major. "Dual-wavelength operation of a diode-pumped Yb:KGW laser." In 2015 Photonics North. IEEE, 2015. http://dx.doi.org/10.1109/pn.2015.7292487.

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Akbari, R., H. Zhao, and A. Major. "Dual-wavelength operation of a diode-pumped Yb:KGW laser." In 2015 11th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2015. http://dx.doi.org/10.1109/cleopr.2015.7375932.

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Wiest, Todd E., and Daniel S. Hinkel. "Blue laser emission from dual-wavelength-pumped Tm:ZBLAN fiber." In AeroSense '97, edited by Andrew R. Pirich and Raymond K. Boncek. SPIE, 1997. http://dx.doi.org/10.1117/12.277640.

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Takeda, H., Y. Akabane, and F. Kannari. "Flashlamp-Pumped Narrow-Band Dual Wavelength Ti: Al2O3 Laser." In Advanced Solid State Lasers. Washington, D.C.: OSA, 2004. http://dx.doi.org/10.1364/assl.1994.tl6.

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