Dental Imaging With Near-Infrared Transillumination Using Random Fiber Laser

Guo, Jiayu; Rao, Yunjiang; Zhang, Weili; Cui, Zewen; Liu, Anran; Yan, Yongsheng

doi:10.1007/s13320-020-0582-5

Cited by 8 publications

(1 citation statement)

References 29 publications

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“…However, due to their intrinsic limitations in terms of low intensity and power [17] , the development of OCT is somewhat restricted. The unique characteristics of RFLs make them a promising alternative to OCT [18,19] . While there have been reports of a 1.3 μm fiber laser based on nonlinear fiber effects, such as stimulated Raman [20][21][22] and soliton self-frequency shift [23] , further improvements in the stability and power of lasers are still needed.…”

Section: Introductionmentioning

confidence: 99%

Generation of 1.3/1.4 µm random fiber laser by bismuth-doped phosphosilicate fiber

et al. 2023

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We have successfully generated a 1.3/1.4 μm random fiber laser (RFL) using bismuth (Bi)-doped phosphosilicate fiber. The Bi-doped RFL has shown excellent long-term operational stability with a standard deviation of approximately 0.34% over 1 h at a maximum output power of 549.30 mW, with a slope efficiency of approximately 29.21%. The Bi-doped phosphosilicate fiber offers an emission spectrum ranging from 1.28 to 1.57 μm, indicating that it can be tuned within this band. Here, we demonstrated a wavelength-tuning fiber laser with a wavelength of 1.3/1.4 μm, achieved through the using of a fiber Bragg grating or a tunable filter. Compared to traditional laser sources, the RFL reduces the speckle contrast of images by 11.16%. Due to its high stability, compact size, and high efficiency, this RFL is highly promising for use in biomedical imaging, communication, and sensor applications.

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Section: Introductionmentioning

confidence: 99%

Generation of 1.3/1.4 µm random fiber laser by bismuth-doped phosphosilicate fiber

et al. 2023

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Spectral broadening in tight confinement geometry of a random fiber laser

et al. 2023

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Cascaded Random Raman Fiber Laser With Low RIN and Wide Wavelength Tunability

et al. 2022

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Cascaded random Raman fiber lasers (CRRFLs) have been used as a new platform for designing high power and wavelength-agile laser sources. Recently, CRRFL pumped by ytterbium-doped random fiber laser (YRFL) has shown both high power output and low relative intensity noise (RIN). Here, by using a wavelength- and bandwidth-tunable point reflector in YRFL, we experimentally investigate the impacts of YRFL on the spectral and RIN properties of the CRRFL. We verify that the bandwidth of the point reflector in YRFL determines the bandwidth and temporal stability of YRFL. It is found that with an increase in the bandwidth of the point reflector in YRFL from 0.2nm to 1.4nm, CRRFL with higher spectral purity and lower RIN can be achieved due to better temporal stability of YRFL pump. By broadening the point reflector’s bandwidth to 1.4nm, the lasing power, spectral purity, and RIN of the 4th-order random lasing at 1349nm can reach 3.03W, 96.34%, and −115.19 dB/Hz, respectively. For comparison, the spectral purity and RIN of the 4th-order random lasing with the point reflector’s bandwidth of 0.2 nm are only 91.20% and −107.99dB/Hz, respectively. Also, we realize a wavelength widely tunable CRRFL pumped by a wavelength-tunable YRFL. This work provides a new platform for the development of ideal distributed Raman amplification pump sources based on CRRFLs with both good temporal stability and wide wavelength tunability, which is of great importance in applications of optical fiber communication and distributed sensing.

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Dental Imaging With Near-Infrared Transillumination Using Random Fiber Laser

Cited by 8 publications

References 29 publications

Generation of 1.3/1.4 µm random fiber laser by bismuth-doped phosphosilicate fiber

Generation of 1.3/1.4 µm random fiber laser by bismuth-doped phosphosilicate fiber

Spectral broadening in tight confinement geometry of a random fiber laser

Cascaded Random Raman Fiber Laser With Low RIN and Wide Wavelength Tunability

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