456-mW graphene Q-switched Yb:yttria waveguide laser by evanescent-field interaction.
In this Letter, we present a passively Q-switched Yb:Y2O3 waveguide laser using evanescent-field interaction with an atmospheric-pressure-chemical-vapor-deposited graphene saturable absorber. The waveguide, pumped by a broad area diode laser, produced an average output power of 456 mW at an absorbed power of 4.1 W. The corresponding pulse energy and peak power were 330 nJ and 2 W, respectively. No graphene damage was observed, demonstrating the suitability of top-deposited graphene for high-power operation.
Amol
A
Choudhary
Stephen J
SJ
Beecher
Shonali
S
Dhingra
Brian
B
D'Urso
Tina L
TL
Parsonage
James A
JA
Grant-Jacob
Ping
P
Hua
Jacob I
JI
Mackenzie
Robert W
RW
Eason
David P
DP
Shepherd
D065966:Absorption, Physicochemical; D055615:Electrical Equipment and Supplies; D006108:Graphite / Q000737:chemistry; D053844:Lasers, Solid-State; D055620:Optical Phenomena
D006108:Graphite