Influence of Pump Properties on the Tunability of 1.5 μm Low-Noise Single Frequency Fiber Amplifier

Darwich, Dia; Bardin, Yves-Vincent; Goeppner, Mathieu; Dixneuf, Clément; Guiraud, Germain; Traynor, Nicholas; Santarelli, Giorgio; Hilico, Adèle

doi:10.1109/lpt.2021.3132689

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Except for the common low-pass behavior for pump noise and high-pass behavior for seed noise, the RIN characteristics here still have some differences from that in the cladding pump manner, such as those in Ref. [34]. In cladding pumped 1.5 μm SF fiber amplifiers, the RIN at a high frequency is influenced by the Er ASE level, which is related to the pump wavelength and direction.…”

Section: Resultsmentioning

confidence: 83%

High-power 1560 nm single-frequency erbium fiber amplifier core-pumped at 1480 nm

Cheng

Lin

Yang

et al. 2022

High Pow Laser Sci Eng

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High power continuous-wave single frequency Er-doped fiber amplifiers at 1560 nm by in-band and core pumping of a 1480 nm Raman fiber laser are investigated in detail.Both co-and counter-pumping configurations are studied experimentally. Up to 59.1 W output and 90% efficiency were obtained in fundamental mode and linear polarization in the co-pumped case, while less power and efficiency were achieved in the counter-pumped setup for additional loss. The amplifier performs indistinguishably in terms of laser linewidth and relative intensity noise in frequency range up to 10 MHz for both configurations. But the spectral pedestal is raised in co-pumping caused by cross-phase modulation between the pump and signal laser, which is observed and analyzed for the first time. Nevertheless, the spectral pedestal is 34.9 dB below the peak, which has negligible effect for most applications.

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Section: Resultsmentioning

confidence: 83%

High-power 1560 nm single-frequency erbium fiber amplifier core-pumped at 1480 nm

Cheng

Lin

Yang

et al. 2022

High Pow Laser Sci Eng

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“…Essentially, the spectral purity of the laser signal can be well preserved even with a linewidth as narrow as 1 Hz, given that the low frequency technical noise components of the amplifier are not unusually high [118] . Another noise component that arises from an SFFA is the ASE, which would be prominent especially under a high pumping rate, a low seeder power, or a small emission cross section of the gain fiber at the signal wavelength [119,120] . In terms of the effect of ASE on the laser frequency noise, it has been reported that the generated ASE in the SFFA would add additive components to the amplified signal, and thus broaden the laser linewidth [121] .…”

Section: Frequency Noisementioning

confidence: 99%

High-power single-frequency fiber amplifiers: progress and challenge [Invited]

Li,

Tao,

Jiang

et al. 2023

中国光学快报

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Unlike conventional continuous-wave lasers with wide spectra, the amplification of single-frequency lasers in optical fibers is much more difficult owing to the ultra-high power spectral density induced nonlinear stimulated Brillouin scattering effect. Nevertheless, over the past two decades much effort has been devoted to improving the power scaling and performance of high-power single-frequency fiber amplifiers. These amplifiers are mostly driven by applications, such as high precision detection and metrology, and have benefited from the long coherence length, low noise, and excellent beam quality of this type of laser source. In this paper, we review the overall development of high-power single-frequency fiber amplifiers by focusing on its progress and challenges, specifically, the strategies for circumventing the stimulated Brillouin scattering and transverse mode instability effects that, at present, are the major limiting factors of the power scaling of the single-frequency fiber amplifiers. These factors are also thoroughly discussed in terms of free-space and all-fiber coupled architecture. In addition, we also examine the noise properties of single-frequency fiber amplifiers, along with corresponding noise reducing schemes. Finally, we briefly envision the future development of high-power single-frequency fiber amplifiers.

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High power ultralow-intensity noise continuous wave laser tunable from orange to red

Darwich¹,

Parakash²,

Dixneuf³

et al. 2022

Opt. Express

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We report here on the development of a multi-Watt power tunable single frequency ultra-low noise laser system emitting around 620 nm. More than 5 W of output power is obtained between 616.5 nm and 630.8 nm using sum frequency generation of 1050 nm and 1550 nm tunable laser sources in a periodic poled lithium niobate crystal. The tunability is achieved through temperature and channel shift, and only limited by the crystal characteristics. An output power of 10.1 W and an optical-optical efficiency of 45% are reached at 624.5 nm. The relative intensity noise properties of the conversion process have been experimentally investigated in different configurations showing excellent agreement with the analytical prediction.

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Influence of Pump Properties on the Tunability of 1.5 μm Low-Noise Single Frequency Fiber Amplifier

Cited by 3 publications

References 12 publications

High-power 1560 nm single-frequency erbium fiber amplifier core-pumped at 1480 nm

High-power 1560 nm single-frequency erbium fiber amplifier core-pumped at 1480 nm

High-power single-frequency fiber amplifiers: progress and challenge [Invited]

High power ultralow-intensity noise continuous wave laser tunable from orange to red

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