System overview of 30 W and 55 W sodium guide star laser systems

Sawruk, Nicholas W.; Lee, Ian; Jalali, Munib; Prezkuta, Zachary; Groff, Ken; Roush, Jared; Rogers, Nathan; Tiemann, Bruce G.; Hannon, Steve; Alford, Joe; d’Orgeville, Céline; Fesquet, Vincent; Oram, Richard J.; Adkins, Sean M.; Grace, Kenny

doi:10.1117/12.858218

Cited by 17 publications

(12 citation statements)

References 6 publications

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“…A total of six Q-switched, flashlamppumped Nd:YAG lasers are used to pump three stages of dye amplification at 26 kHz: one each for the dye master oscillator and pre-amplifier and four for the amplifier. The Keck I laser is a mode-locked continuous wave, solid-state sum frequency generation laser developed by Lockheed Martin Coherent Technologies [12]. The new Keck II laser, to be commissioned for science in 2016, is a continuous wave Raman-fibre amplifier laser with sum harmonic generation developed by the commercial companies TOPTICA and MPBC [13], based on a technology developed and patented by the European Southern Observatory (ESO) [14].…”

Section: Contemporary Physicsmentioning

confidence: 99%

Adaptive optics in astronomy

Wizinowich

2015

Contemporary Physics

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Section: Contemporary Physicsmentioning

confidence: 99%

Adaptive optics in astronomy

Wizinowich

2015

Contemporary Physics

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“…The technology, based on diode-pumped solid-state frequency summing of 1064 and 1319 Nd:YAG lasers 8 , was largely based on experience gained with the 14W Guidestar laser built by the same company and installed on the Gemini North telescope in Hawaii in May of that year 9, 10 . A detailed description of the GS and Keck laser design, fabrication and performance can be found in previous papers 11,12 .…”

Section: Lasermentioning

confidence: 99%

The Gemini MCAO System GeMS: nearing the end of a lab-story

et al. 2010

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GeMS (the Gemini Multi-conjugated adaptive optics System) is a facility instrument for the Gemini-South telescope. It will deliver a uniform, diffraction-limited image quality at near-infrared (NIR) wavelengths over an extended FoV or more than 1 arcmin across. GeMS is a unique and challenging project from the technological point of view and because of its control complexity. The system includes 5 laser guide stars, 3 natural guide stars, 3 deformable mirrors optically conjugated at 0, 4.5 and 9km and 1 tip-tilt mirror. After 10 years since the beginning of the project, GeMS is finally reaching a state in which all the subsystems have been received, integrated and, in the large part, tested. In this paper, we report on the progress and current status of the different sub-systems with a particular emphasis on the calibrations, control and optimization of the AO bench.

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“…For example, a CW laser has been reported as the guide star laser for the Thirty Meter Telescope [9]. Lockheed Martin Coherent Technologies Company has reported a 589 nm guide star laser system that provides over 55 W of output power and achieves a 77 MHz repetition frequency [10]. The pulse width of the laser is ∼0.3 ns, and the linewidth is 2.1 GHz.…”

Section: Introductionmentioning

confidence: 99%

Fiber-solid, hybrid, single-frequency laser (100 W) with a 100 MHz repetition rate and 1 ns pulse width from a spherical aberration compensated four-stage Nd:YVO₄ amplifier

et al. 2014

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A pulsed laser for laser guide stars with a 100 MHz repetition rate and 1 ns pulse width was achieved by external modulation of a continuous wave (CW) laser with a 70 kHz spectrum width. The laser is amplified first by two fiber pre-amplifiers and then by four solid-state power amplifiers. The laser achieves gains as high as 36 dB in the fiber pre-amplifiers due to the long gain medium length. The output power from the fiber amplifiers is 2.1 W. The laser receives further amplification in the solid-state amplifiers and retains good beam quality by aberration compensation. The final output average power is 102.9 W, and the beam quality factor M² is 1.46. The laser reaches high power without spectrum width and pulse width broadening at the 100 MHz repetition rate. The spectrum width of the pulsed laser is less than 0.8 GHz, which is close to the Fourier transform limit. Such a laser with single-frequency, high-repetition, and high-power features along with good beam quality will be valuable for many research areas.

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System overview of 30 W and 55 W sodium guide star laser systems

Cited by 17 publications

References 6 publications

Adaptive optics in astronomy

Adaptive optics in astronomy

The Gemini MCAO System GeMS: nearing the end of a lab-story

Fiber-solid, hybrid, single-frequency laser (100 W) with a 100 MHz repetition rate and 1 ns pulse width from a spherical aberration compensated four-stage Nd:YVO₄ amplifier

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System overview of 30 W and 55 W sodium guide star laser systems

Cited by 17 publications

References 6 publications

Adaptive optics in astronomy

Adaptive optics in astronomy

The Gemini MCAO System GeMS: nearing the end of a lab-story

Fiber-solid, hybrid, single-frequency laser (100 W) with a 100 MHz repetition rate and 1 ns pulse width from a spherical aberration compensated four-stage Nd:YVO4 amplifier

Contact Info

Product

Resources

About

Fiber-solid, hybrid, single-frequency laser (100 W) with a 100 MHz repetition rate and 1 ns pulse width from a spherical aberration compensated four-stage Nd:YVO₄ amplifier