A New Laser Technology for LISA

K. Dahla, P. Cebecib, O. Fitzaub, M. Giesbertsb, C. Grevef, M. Krutzikd, A. Petersd, S.A. Pykad, J. Sanjuane, M. Schiemangkc, T. Schuldte, K. Vossa, A. Wichtc

Published in:

Proc.SPIE 11180, International Conference on Space Optics (ICSO 2018), Chania, Greece, Oct.9-12, 111800C (2019).

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Abstract:

Within the European Space Agency (ESA) activity "Gravitational Wave Observatory Metrology Laser" we designed a laser head to fulfill the LISA laser requirements using a non-NPRO seed laser technology: an external cavity diode laser (ECDL) with resonant optical feedback from an external cavity as master oscillator for further linewidth narrowing. Furthermore, our design features a single-stage fiber amplifier with an amplification factor of about 20 dB. This paper covers the requirements on the laser source for LISA, the design and first results of performance characterization of the laser head breadboard.

a SpaceTech GmbH, Seelbachstr. 13, 88090 Immenstaad, Germany
b Fraunhofer Institute for Laser Technology, Steinbachstr. 15, 52074 Aachen, Germany
c Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
d Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany
e Deutsches Zentrum für Luft- und Raumfahrt, Institute of Space Systems, Robert-Hooke-Str. 7, 28359 Bremen, Germany
f Airbus Defence and Space, Immenstaad, Germany

Keywords:

laser, LISA, ECDL, fiber amplifier.