A new laser technology for LISA

Dahl, K.; Cebeci, Pelin; Fitzau, Oliver; Giesberts, Martin; Greve, Christian; Krutzik, Markus; Peters, Achim; Pyka, Sana Amairi; Sanjuán, Jose; Schiemangk, Max; Schuldt, Thilo; Voss, Kai; Wicht, Andreas

doi:10.1117/12.2535931

Cited by 8 publications

(8 citation statements)

References 7 publications

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“…The total loss after CPS is approximately 1.5 dB. Compared to the laser in [18], our fiber amplifier is comparable in terms of output power and slope efficiency.…”

Section: Power Slope Efficiency and Optical Spectrummentioning

confidence: 88%

“…All the MOPA lasers in these schemes require single-frequency radiation with 2~5 W of output power in a diffraction-limited beam and a relative power stability of better than 2 × 10 −4 / √ Hz at a Fourier frequency of 1 mHz [13]. To date, many studies have been devoted to low-noise lasers for LISA [14][15][16][17][18]. The baseline architecture for the laser consists of a low-power, low-noise master oscillator followed by a power amplifier stage with ~2 W output.…”

Section: Introductionmentioning

confidence: 99%

“…By stabilizing the amplifier pump-diode current, an amplitude noise attenuation of ~30 was achieved at a frequency of 0.1 mHz. In 2018, K. Dahl reported a MOPA design including an extended cavity diode laser (ECDL) as the master oscillator, and two amplification stages as the power amplifier with a 2.1 W output power [18]. However, the RIN below the frequency of 3 mHz still fell behind the requirement of LISA.…”

Section: Introductionmentioning

confidence: 99%

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Yb-Doped All-Fiber Amplifier with Low-Intensity Noise in mHz Range Oriented to Space-Borne Gravitational Wave Detection

Wang

et al. 2023

Applied Sciences

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We present a low-intensity noise single-frequency Yb-doped all-fiber amplifier oriented to space-borne gravitational wave detection. Relative intensity noise (RIN) below −70 dBc/Hz @ 1 mHz~1 Hz was achieved by virtue of feedback-loop-based intensity noise suppression. Based on systematic noise analysis and experimental investigation, we found that the pump noise and temperature-dependent noise of the fiber splitter and the photodetector contributed mainly to the RIN of the fiber amplifier. Therefore, we carefully designed a feedback-loop-based Yb-doped all-fiber amplifier, and finely stabilized the temperature of the pump diode, fiber splitters, and photodetectors. Consequently, the RIN can be suppressed down to −72.5 dBc/Hz around 1 mHz. This low-intensity all-fiber Yb-doped amplifier can be used for space-borne gravitational-wave detection.

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“…The total loss after CPS is approximately 1.5 dB. Compared to the laser in [18], our fiber amplifier is comparable in terms of output power and slope efficiency.…”

Section: Power Slope Efficiency and Optical Spectrummentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Yb-Doped All-Fiber Amplifier with Low-Intensity Noise in mHz Range Oriented to Space-Borne Gravitational Wave Detection

Wang

et al. 2023

Applied Sciences

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“…The highly stable fiber amplifier setup, which is based on our previous design for the LISA study [1], [2], [3], has highest demands not only on spectral linewidth below 10 kHz and polarization extinction ratio (PER) > 30 dB, but also on the relative intensity noise in the frequency range between 0.1 mHz and 3 GHz. To fulfill these requirements, our fiber amplifier design includes a commercial narrow-linewidth Non-Planar Ring Oscillator (NPRO) as seed source, an electro-optical modulator (EOM) for creating sidebands to the center wavelength of 1064 nm at 2.4 GHz, and two fiber amplifier stages.…”

Section: Fiber Amplifier 21 Elegant Breadboard Setupmentioning

confidence: 99%

Highly stable fiber amplifier development and environmental component-testing for the space-based gravitational wave detector LISA

Cebeci¹,

Giesberts²,

Baer³

et al. 2023

Fiber Lasers XX: Technology and Systems

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For a study of the European Space Agency ESA, Fraunhofer ILT developed and built single-frequency, linearly polarized, power-stabilized fiber amplifiers as elegant breadboard (EBB) with an output power <3 W for the future space-based gravitational wave detector LISA (Laser Interferometer Space Antenna). The fiber amplifier developed at Fraunhofer ILT in a previous phase has fulfilled most of the optical performance requirements, except the relative intensity noise (RIN) [1]. In this paper, we present our revised and optimized fiber amplifier which now, in addition to the earlier demonstrated parameters, fulfills the LISA RIN requirements. Currently, the engineering model (EM) of the chosen fiber amplifier concept is being implemented by our project partner SpaceTech GmbH. Furthermore, since the Technology Readiness Level (TRL) of the components has to be confirmed for the EM, Fraunhofer ILT conducted 1000hours operational long-term tests of the components installed in a thermal-vacuum chamber and 2-weeks nonoperational tests in a thermal cycling chamber to qualify them for space applications.

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“…All breadboards are currently undergoing final tests showing promising results that an ECDL with external cavity in conjunction with a single-stage fiber amplifier can meet the demanding laser requirements for LISA [9].…”

Section: Spacetech Developmentmentioning

confidence: 99%

LISA laser system and European development strategy

Shortt

Mondin

McNamara

et al. 2019

International Conference on Space Optics — ICSO 2018

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The Laser Interferometer Space Antenna (LISA), with its extreme distance measurement requirements (pm over arm lengths of 2.5 million km), imposes many stringent requirements on the laser systems used for the distance metrological measurements. In particular, frequency and power stability, sideband phase noise, and frequency reproducibility, the need of manufacturing multiple laser systems and extremely challenging lifetime (extended mission duration of 12.5 years) which demand a streamlined laser design and a particular attention to reliability and procurement strategy, all pose a significant challenge. The main requirements will be presented and analysed. Some preliminary strategies as it pertains to procurement and lot screening shall also be approached.The current configuration and break-down of the future on-board laser systems shall be provided detailing in particular the critical interfaces.Existing space heritage hardware (such as the LISA Pathfinder Master Oscillator) and new specialized developments are under study in both Europe and the US. European industry is developing custom Power Amplifiers to reach the end-of-life requirement of 2W (in Continuous Wave operation). In parallel alterative possible sources for a back-up Master Oscillator are also being investigated, based on off the shelf components and proprietary technologies. An overview of the development strategy shall be presented as well as some details on the specific hardware.

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A new laser technology for LISA

Cited by 8 publications

References 7 publications

Yb-Doped All-Fiber Amplifier with Low-Intensity Noise in mHz Range Oriented to Space-Borne Gravitational Wave Detection

Yb-Doped All-Fiber Amplifier with Low-Intensity Noise in mHz Range Oriented to Space-Borne Gravitational Wave Detection

Highly stable fiber amplifier development and environmental component-testing for the space-based gravitational wave detector LISA

LISA laser system and European development strategy

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