Table 1 Mean output power (mW), PER (dB) over three hours, and the RMS power stability over 70 hours of the 14 fiber outputs of the system.

From: A fibered laser system for the MIGA large scale atom interferometer

Seed

2D MOT

3D MOT/Raman 2

3D MOT/Raman 2 and Repump/Raman 1

Repump/Raman 1

Fiber Output #

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

Power (mW)

3.4

184

183

40

38

37

39

38

36

43

443 (183 + 260)

445 (183 + 262)

13

5

PER (dB)

20

21

25

28

25

24

22

20

20

30

(25/25)

(32/36)

22

26

RMS (%)

<1

<1.4

<2.1

<1

<1.3

<1

<1

<1

<1

<1.5

<1/<1.3

<1/<1.7

<1.5

<1.7

  1. Fiber numbering matches the output labels in Fig. 2. The mean output power is measured for maximum RF input power to the AOM and typical EDFA parameters. Fibers (1) to (3) are for the 2D MOT. Fibers (4) to (9) are for the 3D MOT. Fiber (10) is for detection and clearing the F = 2 manifold. Fiber (11) and (12) are for the Raman transitions required for state and velocity selection; the power from the amplifiers is separately shown as are the PERs. Fiber (13) is for clearing the F = 1 manifold. Fiber (14) is for detection of atoms in the F = 1 manifold. Not accounted for here, there is an additional fiber, labeled “3D MOT repump” in Fig. 2, which provides 19 mW of repump light distributed among (7), (8), and (9); the PER of this fiber is 21 dB.
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