Fiber lasers for medical diagnostics and treatments: state of the art, challenges and future perspectives

Taccheo, S.

doi:10.1117/12.2256015

Cited by 10 publications

(3 citation statements)

References 40 publications

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“…The thermal effect of laser irradiation is so small that could not damage or destroy the irradiated tissue. Such fiber lasers are widely used in therapy [41][42][43], diagnostics [44][45][46], cosmetics [40,42], and research [47,48]. The second group refers to the thermal response and members of this group are often called ablative fiber lasers.…”

Section: Ablative Versus Non-ablative Fiber Lasersmentioning

confidence: 99%

Fiber Lasers and Their Medical Applications

Gursel¹

2018

Optical Amplifiers - A Few Different Dimensions

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Advancing of photonics, aided with fruitful and abundant experimental and theoretical studies, over the last four decades has brought about the invention of a large variety of lasers. Among them one of the most popular types is a fiber laser, which is a variation of the standard solid-state laser, with the medium being a clad fiber waveguide structure and different dopants inside core serve as a gain media. They were derived from erbiumdoped fiber amplifiers, which are still important component for telecommunications. Since discovery, fiber laser has become a natural choice for many uses, primarily because of the physical characteristics of fiber waveguide structure. Their rapid progress may show how excellent they really are. Although fiber lasers are today widely used in various research and industrial areas, one of the most meaningful applications of fiber laser technology has been through its use in medicine. A wide variety of wavelengths generated by fiber lasers as well as the diversity of physical mechanisms employed in pulse generation also additionally underpins the flexibility of fiber laser technology. This study is devoted to background technology of fiber lasers in the light of medical applications. Basic physics and theories of optical fibers and their important properties are introduced.

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Section: Ablative Versus Non-ablative Fiber Lasersmentioning

confidence: 99%

Fiber Lasers and Their Medical Applications

Gursel¹

2018

Optical Amplifiers - A Few Different Dimensions

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“…Multi-wavelength fiber laser has a very important application value in optical fiber communications [1,2] , optical fiber sensing [3,4] , medical and military fields [5][6][7] due to its compact structure, strong anti-interference ability, high pump conversion efficiency and good output beam quality [8] . At present, there are mainly two methods to realize multiwavelength tunable fiber lasers: linear and nonlinear methods.…”

Section: Introductionmentioning

confidence: 99%

Research on switchable and tunable multi-wavelength erbium-doped fiber laser

Chen

Liu

Miao³

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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A multi-wavelength erbium-doped fiber laser with switchable output wavelength and tunable wavelength interval is designed and realized. The ring cavity structure is adopted. There are two independent sub-cavities in the ring cavity. One sub-cavity uses FBG-Sagnac ring filter as the frequency selection element, and the other sub-cavity uses fiber Bragg grating (FBG) as the frequency selection element. The performance of the FBG-Sagnac loop filter is analyzed by transmission matrix method and MATLAB simulation, and a dual-path erbium-doped fiber laser is built. At room temperature, by changing the state of optical attenuator and polarization controller, single, double and three wavelength outputs are obtained. In the mode of outputting a wavelength, the laser can realize free switching among the output wavelength of 1550.0 nm, 1550.8 nm and 1551.6 nm. In the mode of dual wavelength output, the output wavelength interval can be switched between 0.8 nm and 1.6 nm. In the mode of outputting three wavelengths, the wavelength interval of the output laser is 0.8 nm, it can be realized to meet the requirements of wavelength division multiplexing. In the stability test, the experimental results show that the laser has good stability.

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“…In recent years, significant progress has been made on the fabrication of ultrafast fiber lasers (delivering extremely short pulses, in the order of picoseconds or femtoseconds), which have become the key element for multiple applications, such as optical communications, material processing, laser micromachining [1][2][3][4][5], etc. These reliable, flexible, and compact sources have found applications not only in industrial processes but also in the medical (biological photonics [6][7][8]) or military (radar systems [9,10]) fields. In order to generate laser pulses, two different techniques are applied, namely Q-switching or mode-locking operation, both based on the insertion of a variable attenuator, e.g., a saturable absorber (SA), within the laser resonator cavity [11,12].…”

Section: Introductionmentioning

confidence: 99%

High-Quality, InN-Based, Saturable Absorbers for Ultrafast Laser Development

et al. 2020

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New fabrication methods are strongly demanded for the development of thin-film saturable absorbers with improved optical properties (absorption band, modulation depth, nonlinear optical response). In this sense, we investigate the performance of indium nitride (InN) epitaxial layers with low residual carrier concentration (<1018 cm−3), which results in improved performance at telecom wavelengths (1560 nm). These materials have demonstrated a huge modulation depth of 23% and a saturation fluence of 830 µJ/cm2, and a large saturable absorption around −3 × 104 cm/GW has been observed, attaining an enhanced, nonlinear change in transmittance. We have studied the use of such InN layers as semiconductor saturable absorber mirrors (SESAMs) for an erbium (Er)-doped fiber laser to perform mode-locking generation at 1560 nm. We demonstrate highly stable, ultrashort (134 fs) pulses with an energy of up to 5.6 nJ.

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Fiber lasers for medical diagnostics and treatments: state of the art, challenges and future perspectives

Abstract: Fiber laser is a fast growing yet quite young type of laser with huge potential in healthcare due to versatility and reliability. The talk discusses present and future for fiber lasers for medical applications and address future challenges and competitions with other sources.

Cited by 10 publications

References 40 publications

Fiber Lasers and Their Medical Applications

Fiber Lasers and Their Medical Applications

Research on switchable and tunable multi-wavelength erbium-doped fiber laser

High-Quality, InN-Based, Saturable Absorbers for Ultrafast Laser Development

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