Two-wavelength butt-joint diode lasers for the difference- and stum-frequency generation
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Successful implementation and prospects of the new design of the nonlinear mixing heterolasers, the Butt-Joint Laser, where two butt-joined laser diodes are optically coupled but injection pumped separately, are presented. Two diode lasers operate at slightly different frequencies in the near-IR range and are mounted top side down on a mutual heat sink with their facets touched or separated by a few micron distance in such a way that their waveguides are aligned in the transverse direction. This robust design guarantees stable CW room-temperature two-wavelength generation and provides an efficient nonlinear optical mixing. The latter results in the difference-frequency (terahertz) as well as the sum-frequency and second-harmonic radiation in the standard edge-emitting geometry. The surface-emitting schemes of the Butt-Joint Lasers are also proposed. In the implemented GaAs/lnGaAs/lnGaP Butt-Joint Laser, we obtain the sum-frequency and the second-harmonic signals at the same power level, which indicate the possibility of an efficient difference-frequency generation in these devices. We show that the spectral control of the coupled oscillators is possible by changing the Q-factors and pumping of diodes, which provides a wide tuning of the mid/far-IR output. The mid/far-IR measurements, the optimization of the Butt-Joint Laser, and the investigation of the spatial and spectral competition of lasing modes are underway.
name of conference
CAOL 2005. Second International Conference on Advanced Optoelectronics and Lasers, 2005.
Proceedings of CAOL 2005. Second International Conference on Advanced Optoelectronics and Lasers, 2005.
author list (cited authors)
Biryukov, A. A., Nekorkin, S. M., Zvonkov, N. B., Aleslhkin, V. Y., Gavrilenko, V. I., Maremjanin, K. V., ... Scully, M. O.
complete list of authors
Biryukov, AA||Nekorkin, SM||Zvonkov, NB||Aleslhkin, V Ya||Gavrilenko, VI||Maremjanin, KV||Morozov, SV||Belyanin, AA||Kocharovsky, VV||Kocharovsky, VI V||Scully, MO