A 1 W tapered amplifier requiring only 200μW of injection power at 780 nm is presented in this paper. This is achieved by injecting the seeding light into the amplifier from its tapered side and feeding the amplified light back into the small side. The amplified spontaneous emission of the tapered amplifier is suppressed by 75 dB. The double-passed tapered laser, presented here, is extremely stable and reliable. The output beam remains well coupled to the optical fiber for a timescale of months, whereas the injection of the seed light did not require realignment for over a year of daily operation.

1.
K. B.
MacAdam
,
A.
Steinbach
, and
C.
Wieman
,
Am. J. Phys.
60
,
1098
(
1992
).
2.
C. E.
Wieman
and
L.
Hollberg
,
Rev. Sci. Instrum.
62
,
1
(
1991
).
3.
I.
Shvarchuck
,
K.
Dieckmann
,
M.
Zielonkowski
, and
J. T. M.
Walraven
,
Appl. Phys. B: Lasers Opt.
71
,
475
(
2000
).
4.
J. N.
Walpole
,
Opt. Quantum Electron.
28
,
623
(
1996
).
5.
D.
Voigt
,
E. C.
Schilder
,
R. J. C.
Spreeuw
, and
H. B.
van Linden van den Heuvell
,
Appl. Phys. B: Lasers Opt.
72
,
279
(
2001
).
6.
Y.
Xiong
,
S.
Murphy
,
J. L.
Carlsten
, and
K.
Repasky
,
Opt. Eng. (Bellingham)
45
,
124205
(
2006
).
7.
A. C.
Wilson
,
J. C.
Sharpe
,
C. R.
McKenzie
,
P. J.
Manson
, and
D. M.
Warrington
,
Appl. Opt.
37
,
4871
(
1998
).
8.
R. A.
Nyman
,
G.
Varoquaux
,
B.
Villier
,
D.
Sacchet
,
F.
Moron
,
Y.
Le Coq
,
A.
Aspect
, and
P.
Bouyer
,
Rev. Sci. Instrum.
77
,
033105
(
2006
).
9.
Eagleyard Part No. EYP-TPA-0780-01000-3006-CMT03-0000. Datasheet is available from http://www.eagleyard.com.
10.
The Peltier has been glued using Loctite 401 cyanoacrylic glue. It can be removed by heating the assembly to 120°C.
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