Umit Demirbas,1
Alphan Sennaroglu,1,2
Franz X. Kärtner,1
and James G. Fujimoto1,*
1Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
2Laser Research Laboratory, Department of Physics, Koç University, Rumelifeneri, Sariyer, 34450 Istanbul, Turkey
Umit Demirbas, Alphan Sennaroglu, Franz X. Kärtner, and James G. Fujimoto, "Comparative investigation of diode pumping for continuous-wave and mode-locked Cr3+:LiCAF lasers," J. Opt. Soc. Am. B 26, 64-79 (2009)
doped colquiriites are promising solid-state gain media for developing inexpensive and highly efficient tunable continuous-wave (cw) and femtosecond lasers. Among doped colquiriites, has superior thermal properties enabling high-power operation with standard laser cavities. In this study we present detailed laser experiments with , which achieve laser performance approaching that of the much more expensive Ti:sapphire laser technology. Inexpensive, new, multimode and single-mode diode lasers were used as pump sources. With multimode diode pumping, cw output powers exceeding and mode-locked pulse energies as high as were obtained. Using single-mode diode pumping, up to of cw output power with 54% slope efficiency and continuous tuning between 765 and were demonstrated. In cw mode-locking, , pulses were obtained, and an electrical-to-optical conversion efficiency of 7.8% was demonstrated.
Umit Demirbas, Duo Li, Jonathan R. Birge, Alphan Sennaroglu, Gale S. Petrich, Leslie A. Kolodziejski, Franz X. Kärtner, and James G. Fujimoto Opt. Express 17(16) 14374-14388 (2009)
Umit Demirbas, Michael Schmalz, Bernd Sumpf, Götz Erbert, Gale S. Petrich, Leslie A. Kolodziejski, James G. Fujimoto, Franz X. Kärtner, and Alfred Leitenstorfer Opt. Express 19(21) 20444-20461 (2011)
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List of Output Powers, Slope Efficiencies (with Respect to Absorbed Pump Power), and Tuning Ranges Obtained with Cr:LiCAF Gain Media in cw Operation Using Several Different Pump Sourcesa
Chromium concentration of the Cr:LiCAF crystals is also specified.
Denotes the results obtained in this work.
These are quasi cw results which might as well be included in Table 3. Here we prefer to present them with the cw lasing results, since the average output power levels were specified in the papers rather than pulse energies.
Table 3
List of Pulse Energies, Pulse Widths, Slope Efficiencies, and Tuning Ranges Obtained with Cr:LiCAF Gain Media in Long-pulse Mode Laser Operation (ns to ms Pulses) Using Different Pump Sources
List of Average Output Powers, Pulse Energies, and Pulse Widths Obtained with Cr:LiCAF Gain Media in cw Mode-Locked Operation Using Different Pump Sources
List of Output Powers, Slope Efficiencies (with Respect to Absorbed Pump Power), and Tuning Ranges Obtained with Cr:LiCAF Gain Media in cw Operation Using Several Different Pump Sourcesa
Chromium concentration of the Cr:LiCAF crystals is also specified.
Denotes the results obtained in this work.
These are quasi cw results which might as well be included in Table 3. Here we prefer to present them with the cw lasing results, since the average output power levels were specified in the papers rather than pulse energies.
Table 3
List of Pulse Energies, Pulse Widths, Slope Efficiencies, and Tuning Ranges Obtained with Cr:LiCAF Gain Media in Long-pulse Mode Laser Operation (ns to ms Pulses) Using Different Pump Sources
List of Average Output Powers, Pulse Energies, and Pulse Widths Obtained with Cr:LiCAF Gain Media in cw Mode-Locked Operation Using Different Pump Sources