-
Optics Letters 08/1993; 18(16):1326. · 3.40 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The design and performance of a diode-pumped Nd(3+):YLF laser oscillator is described. A simple transverse-pump geometry in which a lensing duct efficiently couples the two-dimensional diode-pump array radiation to the YLF rod is employed. Using a color-center LiF crystal as a passive Q switch, we have produced burst-mode pulse trains that have a total energy of 115 mJ at a 30-Hz pulse-repetition frequency. The Q-switched pulse-train energy is 71% of the optimized free-lasing pulse energy, which is 163 mJ. Using an unstable cavity with a graded-reflectivity output coupler, we have generated Q-switched pulses that have 12-ns duration and near-diffraction-limited spatial profiles.
Optics Letters 01/1992; 17(2):124-6. · 3.40 Impact Factor
-
C. Bibeau,
A. Bayramian,
P. Armstrong,
E. Ault,
R. Beach,
M. Benapfl,
R. Campbell,
J. Dawson,
C. Ebbers, B Freitas, [......],
N. Peterson,
K. Schaffers,
C. Stolz,
S. Sutton,
J. Tassano,
S. Telford,
E. Utterback,
M. Randles,
B. Chai,
Y. Fei
[show abstract]
[hide abstract]
ABSTRACT: We report on the operation of the Mercury laser with fourteen 4 $\times$ 6 cm$^{2}$ Yb:S-FAP amplifier slabs pumped by eight 100 kW peak power diode arrays. The system was continuously run at 55 J and 10 Hz for several hours, (2$\times$10$^{5}$ cumulative shots) with over 80% of the energy in a 6 times diffraction limited spot at 1.047 $\mu $m. Improved optical quality was achieved in Yb:S-FAP amplifiers with magneto-rheological finishing, a deterministic polishing method. In addition, average power frequency conversion employing YCOB was demonstrated at 50% conversion efficiency or 22.6 J at 10 Hz.
http://dx.doi.org/10.1051/jp4:2006133161.
-
A J Bayramian,
J P Armstrong,
G Beer,
R Campbell,
R Cross,
A Erlandson, B Freitas,
J Menapace,
W Molander,
L J Perkins,
K Schaffers,
C Siders,
S Sutton,
J Tassano,
S Telford,
C A Ebbers,
J Caird,
C P J Barty
[show abstract]
[hide abstract]
ABSTRACT: A high average power diode pumped solid state laser is used to pump large aperture Ti:sapphire enabling high average power chirped pulse amplification. After compression, over a petawatt of peak power will be used to generate fusion ions and neutrons for materials testing of first wall and final optics candidates.
