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academies
August 23-24, 2018 | Paris, France
Laser, Optics and Photonics
International Conference on
Journal of Materials Science and Nanotechnology | Volume: 2
Parametric generation in PPLN crystal with pumping by a Q-switched mode locked Nd:YAG laser:
Comparison of super luminescent and singly - resonant regimes
Valery Ilyich Donin, D V Yakovin
and
M D Yakovin
Siberian Branch of RAS, Russia
I
n this paper, we compared two regimes of optical parametric
generation (parametric super luminescence and a singly-
resonant OPO) in a periodically poled lithium niobate (PPLN)
crystal pumped by a train of ~50ps pulses using a Q-switched
mode locked Nd:YAG laser. In the super luminescent regime
at the average pumping power of the laser of ~0.5W and train
repetition rates of 2kHz, the peak total (at the signal ~1.5μm
and idler ~3.82μm wavelengths) output power were as high as
~200kW. The total conversion efficiency (with respect to the
absorbed power) was ~83%. To the best of our knowledge,
this is the highest efficiency obtained with powerful super
luminescent parametric sources. In the considered regimes, the
values of the output powers and the generation thresholds at
the idlewavelength differed by a factor of 1.5 (the output power
in the regime OPO was higher and the threshold was lower).
The pump depletion was ~50% for both regimes. Divergences
at signal and idle wavelengths are measured. New lines in the
visible and UV spectrum were observed and are explained
Speaker Biography
Valery Ilyich Donin received his degrees MSc (Tomsk State University) and PhD (Siberian
Branch of the Russian Academy of Sciences SB RAS) and Doctorate in Physics andMaths (SB
RAS) in1963,1972,and1989,respectively.Hehasauthoredabout130scientificpublication,
including7 invitations.HehasbeenawardedaMedalattheExhibitionofNationalEconomic
Achievements (USSR, 1979), the American Medal of Honor and the Twenty-first Century
Achievement Award (ABI, 2001). He has been inducted into the 500 Leaders of influence
Hall of Fame (ABI, 2002) and the 500 Founders of 21
st
century Honours List (IBC, 2002). He is
amember of the Russian Rozhdestvensky Optical Society, the European Optical Society and
American Optical Society. His main interests is on physics of CWhigh-current gas ion lasers.
e:
vid-500@iae.nsk.suNotes: