TY - JOUR
T1 - Extended tunability in a two-chip VECSEL
AU - Fan, Li
AU - Fallahi, Mahmoud
AU - Zakharian, Aramais R.
AU - Hader, Jörg
AU - Moloney, Jerome V.
AU - Bedford, Robert
AU - Murray, James T.
AU - Stolz, Wolfgang
AU - Koch, Stephan W.
N1 - Funding Information:
Manuscript received September 29, 2006; revised January 14, 2007. This work was supported by the Air Force Office of Scientific Research (AFOSR) through an MRI Program F49620-02-1-0380. The work of R. Bedford was supported by the AFOSR through LRIR 96SN01COR. The work of S. W. Koch and W. Stolz was supported by the Deutsche Forschungsgemeinschaft. L. Fan and M. Fallahi are with the College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). A. R. Zakharian, J. Hader, and J. V. Moloney are with the Arizona Center for Mathematical Science and College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA. R. Bedford is with the Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 USA. J. T. Murray is with Areté Associates, Tucson, AZ 85712 USA. W. Stolz and S. W. Koch are with the Department of Physics and Material Sciences Center, Philips Universität Marburg, 35032 Marburg, Germany. Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2007.893898 Fig. 1. Schematic diagram of a tunable two-chip VECSEL with a W-shaped cavity and a BF. Relative dimensions not to scale.
PY - 2007/4/15
Y1 - 2007/4/15
N2 - We demonstrate a widely tunable vertical-external-cavity surface-emitting laser (VECSEL) with a W-shaped cavity, in which two VECSEL chips serve as fold mirrors and a birefringent filter is inserted at Brewster's angle. These two chips provide much higher modal gain and broader bandwidth of the gain than a single chip does, enhancing the VECSEL tuning range and reducing the variation of tunable output power with the tuned wavelength. This two-chip VECSEL configuration makes it possible to shape the modal gain spectra of the laser or to manipulate the tuning curve of the laser by two different chips with certain gain peak detuning (offset). Multiwatts high-brightness linearly polarized output with a tuning range of 33 nm is demonstrated in such a two-chip VECSEL.
AB - We demonstrate a widely tunable vertical-external-cavity surface-emitting laser (VECSEL) with a W-shaped cavity, in which two VECSEL chips serve as fold mirrors and a birefringent filter is inserted at Brewster's angle. These two chips provide much higher modal gain and broader bandwidth of the gain than a single chip does, enhancing the VECSEL tuning range and reducing the variation of tunable output power with the tuned wavelength. This two-chip VECSEL configuration makes it possible to shape the modal gain spectra of the laser or to manipulate the tuning curve of the laser by two different chips with certain gain peak detuning (offset). Multiwatts high-brightness linearly polarized output with a tuning range of 33 nm is demonstrated in such a two-chip VECSEL.
KW - Birefringent filter (BF)
KW - Optically pumped semiconductor laser
KW - Tunable linearly polarized vertical-external-cavity surface-emitting laser (VECSEL)
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U2 - 10.1109/LPT.2007.893898
DO - 10.1109/LPT.2007.893898
M3 - Article
AN - SCOPUS:34247140710
SN - 1041-1135
VL - 19
SP - 544
EP - 546
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 8
ER -