Power scaling and spectral linewidth suppression of hybrid Brillouin/thulium fiber laser

Shi, Chaodu; Sheng, Quan; Fu, Shijie; Sun, Shuai; Zhang, Junxiang; Shi, Wei; Yao, Jianquan

doi:10.1364/oe.379013

Cited by 25 publications

(8 citation statements)

References 37 publications

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“…As a highly effective means of achieving a narrow laser linewidth output, stimulated Brillouin scattering (SBS) can generate laser pulses with a short-pulse duration and high beam quality. [15][16][17][18][19][20] In addition, this study demonstrates that the SBS has a controllable output linewidth. [21][22][23][24][25] Spectral density S ( ) w of the Stokes radiation is given by: 26) S n ncA…”

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confidence: 61%

Stokes linewidth narrowing by stimulated Brillouin scattering in liquid media

Wang¹,

Bai²,

Hun³

et al. 2023

Appl. Phys. Express

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This work demonstrates that the Brillouin gain linewidth and pump power density are the primary factors affecting the linewidth of the Stokes pulse. As the pump power density increases, the Stokes linewidth tends to narrow and approaches the pump linewidth. This is the first study to reveal that the pump linewidth is the limiting factor in narrowing the Stokes linewidth. The Stokes linewidths of different liquid media were compared, and it was found that media with a wide Brillouin gain linewidth can be used to obtain lasers with a wider range of linewidths.

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mentioning

confidence: 61%

Stokes linewidth narrowing by stimulated Brillouin scattering in liquid media

Wang¹,

Bai²,

Hun³

et al. 2023

Appl. Phys. Express

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“…The heavy attenuation mechanism of acoustic phonons combined with the strong feedback provided by the cavity enables micro-waveguide Brillouin lasers (BLs) to produce laser outputs far below the linewidth of conventional single-frequency lasers and close to the quantum noise limit [ 20 , 21 ] . Similarly, strong linewidth narrowing has been reported in fiber BLs [ 22 ] and laser outputs of sub-kHz magnitude subject to technical noise [ 23 ] . These demonstrations based on waveguide structures also face some insurmountable problems in power boosting.…”

Section: Introductionmentioning

confidence: 72%

Linewidth narrowing in free-space running diamond Brillouin lasers

Jin

Bai

Zhao

et al. 2023

High Pow Laser Sci Eng

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This study analyzes the linewidth narrowing characteristics of free-space-running Brillouin lasers and investigates the approaches to achieve linewidth compression and power enhancement simultaneously. The results show that the Stokes linewidth behavior in a free-space-running Brillouin laser cavity is determined by the phase diffusion of the pump and the technical noise of the system. Experimentally, a Stokes light output with a power of 22.5 W and a linewidth of 3.2 kHz was obtained at a coupling mirror reflectivity of 96%, which is nearly 2.5 times compressed compared with the linewidth of the pump (7.36 kHz). In addition, the theorical analysis shows that at a pump power of 60 W and a coupling mirror reflectivity of 96%, a Stokes output with a linewidth of 1.6 kHz and up to 80% optical conversion efficiency can be achieved by reducing the insertion loss of the intracavity. This study provides a promising technical route to achieve high-power ultra-narrow linewidth special wavelength laser radiations.

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“…With the continuous development of the manufacturing industry, more growth is to be expected for the material processing market in the future. Optical fiber laser technology has the most application domains; numerous studies have been conducted on the strengthening of power-scaling and performance (Abramov et al, 2018;Dong et al, 2020;Shi et al, 2020). Innovative applications of laser and optical technologies happen continuously in various application domains.…”

Section: Literature Review 21 the Development Status Of Laser And Opt...mentioning

confidence: 99%

The development trend and academic patent technology network of laser and optical technologies

Chang

2021

IJIS

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Purpose The application of laser and optical technologies in the industry is wide and extensive; the development and application of laser and optical technologies have become a promising research domain. However, most existing studies have focused on the technical aspects or the application aspects; these studies have not highlighted the technology distribution and application development of laser and optical technologies from the big picture. Additionally, the manner in which the research and development (R&D) results of universities correspond to the needs of enterprises and industry has become a topic of concern for the public. Therefore, this study aims to adopt the academic patents as the basis for analysis and to construct a laser and optical technology network. Design/methodology/approach Therefore, in the current study, the researchers have analyzed relevant academic patent technology networks, using academic patents of laser and optical technologies as a basis of analysis. Findings The study results indicated that the key technologies mainly lie in nanostructures, metal-working, material analysis and semiconductor devices. Additionally, these technologies are mainly applied in industries, such as optics, medical technology, pharmaceuticals, biotechnology and organic fine chemistry; this indicated that a large proportion of academia’s R&D outcomes are applied in these industries. Originality/value In this study, the researchers have constructed a technology network model to explore the technical development direction of laser and optical technologies; the results of the current study could serve as a reference for universities and industry for allocation of R&D resources.

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Power scaling and spectral linewidth suppression of hybrid Brillouin/thulium fiber laser

Cited by 25 publications

References 37 publications

Stokes linewidth narrowing by stimulated Brillouin scattering in liquid media

Stokes linewidth narrowing by stimulated Brillouin scattering in liquid media

Linewidth narrowing in free-space running diamond Brillouin lasers

The development trend and academic patent technology network of laser and optical technologies

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