TY - GEN
T1 - Microwave signal generation with high spectral purity using two-frequency solid-state lasers
AU - Brunel, M.
AU - Bretenaker, F.
AU - Lai, N. D.
AU - Alouini, M.
AU - Vallet, M.
AU - Emile, O.
AU - Le Floch, A.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - Two-frequency solid-state lasers are shown to provide beat notes at microwave frequencies with continuous tunability, high spectral purity and 100% modulation depth. Owing to an intra-cavity birefringent crystal providing both electro- and thermo-optic properties, the laser delivers a beat frequency that is both voltage- and temperature-controlled. First, a dual phase-locked loop is experimentally demonstrated to stabilize a two-frequency solid-state laser against a RF synthesizer, resulting in a linewidth of 25 mHz. Second, we show that pump-power modulation can lead to a new two-frequency pulsed operation with pulse-to-pulse RF coherence. Third, a specially designed two-frequency composite Er-Yb:glass-LiTaO3 microchip laser is shown to provide a beat note up to 100 GHz with continuous tunability. Applications of these lasers to local oscillators in microwave-photonic systems and to lidar-radars are discussed.
AB - Two-frequency solid-state lasers are shown to provide beat notes at microwave frequencies with continuous tunability, high spectral purity and 100% modulation depth. Owing to an intra-cavity birefringent crystal providing both electro- and thermo-optic properties, the laser delivers a beat frequency that is both voltage- and temperature-controlled. First, a dual phase-locked loop is experimentally demonstrated to stabilize a two-frequency solid-state laser against a RF synthesizer, resulting in a linewidth of 25 mHz. Second, we show that pump-power modulation can lead to a new two-frequency pulsed operation with pulse-to-pulse RF coherence. Third, a specially designed two-frequency composite Er-Yb:glass-LiTaO3 microchip laser is shown to provide a beat note up to 100 GHz with continuous tunability. Applications of these lasers to local oscillators in microwave-photonic systems and to lidar-radars are discussed.
U2 - 10.1109/MWP.2003.1422861
DO - 10.1109/MWP.2003.1422861
M3 - Conference contribution
AN - SCOPUS:84946131918
T3 - MWP 2003 - Proceedings, International Topical Meeting on Microwave Photonics
SP - 183
EP - 188
BT - MWP 2003 - Proceedings, International Topical Meeting on Microwave Photonics
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - International Topical Meeting on Microwave Photonics, MWP 2003
Y2 - 10 September 2003 through 12 September 2003
ER -