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@article{Runcorn:2018:10.1364/OE.26.004440,
author = {Runcorn, TH and Murray, R and Taylor, JR},
doi = {10.1364/OE.26.004440},
journal = {Optics Express},
pages = {4440--4447},
title = {Highly efficient nanosecond 560 nm source by SHG of a combined Yb-Raman fiber amplifier},
url = {http://dx.doi.org/10.1364/OE.26.004440},
volume = {26},
year = {2018}
}

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TY  - JOUR
AB  - We demonstrate a nanosecond 560 nm pulse source based on frequency-doubling the output of a combined Yb-Raman fiber amplifier, achieving a pulse energy of 2.0 µJ with a conversion efficiency of 32% from the 976 nm pump light. By introducing a continuous-wave 1120 nm signal before the cladding pumped amplifier of a pulsed Yb:fiber master oscillator power amplifier system operating at 1064 nm, efficient conversion to 1120 nm occurs within the fiber amplifier due to stimulated Raman scattering. The output of the combined Yb-Raman amplifier is frequency-doubled to 560 nm using a periodically poled lithium tantalate crystal with a conversion efficiency of 47%, resulting in an average power of 3.0 W at a repetition rate of 1.5 MHz. The 560 nm pulse duration of 1.7 ns and the near diffraction-limited beam quality (M2≤1.18) make this source ideally suited to biomedical imaging applications such as optical-resolution photoacoustic microscopy and stimulated emission depletion microscopy.
AU  - Runcorn,TH
AU  - Murray,R
AU  - Taylor,JR
DO  - 10.1364/OE.26.004440
EP  - 4447
PY  - 2018///
SN  - 1094-4087
SP  - 4440
TI  - Highly efficient nanosecond 560 nm source by SHG of a combined Yb-Raman fiber amplifier
T2  - Optics Express
UR  - http://dx.doi.org/10.1364/OE.26.004440
UR  - http://hdl.handle.net/10044/1/56820
VL  - 26
ER  -

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