Efficient silica-based Ho3+ fibre laser for 2 [micro sign]m spectral region pumped at 1.15 [micro sign]m

Kurkov, Andrei S; Дианов, Е. М.; Medvedkov, O.I.; Ivanov, G. A.; Aksenov, V. A.; Paramonov, V. M.; Vasiliev, S.A.; Першина, Е. В.

doi:10.1049/el:20000734

Cited by 44 publications

(16 citation statements)

References 4 publications

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“…Among them, silica fibers activated with holmium (Ho), or co-activated with Yb and Ho [4][5][6][7][8][9][10] are of a special interest since these fibers can be an alternative for communications purposes in a 2-mm spectral range and for the lidar and medicine applications. Yb-Ho-doped fibers can be also used as an amplifying medium for the frequency- On the other hand, as far as we know only the recent work [8] reports on an analysis of Yb-Hodoped silica fiber as a potential material for lasing at wavelength 2.1 mm at IR pumping, where the up-conversion mechanism [11], the effect wellknown in Yb-Ho-co-doped bulk crystals and glasses [12][13][14][15][16][17][18][19], is shown to be quite effective.…”

Section: Introductionmentioning

confidence: 99%

Multi-wavelength visible up-converted luminescence in novel heavily doped Ytterbium–Holmium silica fiber under low-power IR diode pumping

Kir’yanov

Minkovich

Barmenkov

et al. 2005

Journal of Luminescence

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Section: Introductionmentioning

confidence: 99%

Multi-wavelength visible up-converted luminescence in novel heavily doped Ytterbium–Holmium silica fiber under low-power IR diode pumping

Kir’yanov

Minkovich

Barmenkov

et al. 2005

Journal of Luminescence

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“…In this paper we propose a new scheme of the passive Qswitched laser where Ho-doped fiber is used as the saturated absorber. Earlier this fiber type was used to get a lasing in a range 2 μm [11,12]. For these active ions the lifetime in the excited state is also long, namely approximately of 0.5 ms and we suggest close Ho-doped fiber by Bragg grating reflectors forming a separate cavity.…”

Section: Wavelength Nmmentioning

confidence: 76%

All fiber Yb-Ho pulsed laser

2009

Self Cite

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Abstract:For the first time we have suggested and realized passive Q-switched Yb-doped fiber laser with a saturable absorber based on Ho-doped fiber laser. The pulse duration was of 250 ns, the pulse energy -70 μJ, the peak power -300 W. The laser is perspective for technology processes. Possible ways of laser characteristics improving are discussed. At present CW Yb-doped fiber lasers [1] have found different applications. Q-switched fiber lasers due to high pulse energy allow one to increase a number of applications including medicine, material processing, range finding etc. Q-switched oscillation can be obtained using outer electro-or magnetomechanical devices [2,3], however all fiber pulsed lasers are of special interest since they keep all advantages of fiber lasers, namely compactness, absence of mechanical elements, long time stability etc. Up to now several schemes of such lasers were proposed and realized. One of them is self Q-switched fiber laser where to avoid CW lasing, a continuous feedback is suppressed by the isolation of the output laser end. In this scheme lasing is provided by the input Bragg grating and dynamic feedback caused by stimulated Brillouin scattering [4,5] or Rayleigh scattering [6]. Output energy of 0.17 mJ was achieved when the additional amplification of the laser emission was applied [7]. Disadvantage of this approach consists in instability of the train frequency and the pulse amplitude. Also there is a requirement to suppress the reflection from the output end that complicates laser applications. Another approach consists in the application of a fiber saturable absorber within the laser cavity.Thus, Cr-doped fiber was used as absorber in Nddoped fiber [8]. In [9] it was demonstrated that a placing of Sm-doped fiber in the cavity of Yb-doped fiber laser allows one to get the pulse generation occurring in extremely stable manner with pulse energy of approximately 20 μJ. A Q-switch pulse had a nearly perfect pulse shape with a ∼ 650 ns FWHM. The interesting approach was applied in [10], where Bi-doped fiber played a role of the saturated absorber. In contrast to Cr and Sm-doped fibers, Bi

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“…-doped silica fibre lasers [8,9] pump wavelengths of ~1150 nm are desired. One way of achieving this end is to utilize the lower energy P-O vibration relevant to phosphate glass in a RFL arrangement comprising of a single Stokes shift.…”

Section: +mentioning

confidence: 99%

Raman oscillation on a new vibrational mode setup in phosphosilicate binary glass systems

Ashton

Jackson

2005

Opt. Express

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Abstract:We demonstrate Raman oscillation at a wavelength of 1158 nm using a new vibrational mode in a phosphosilicate-glass system when pumped at a 1060-nm wavelength. The lower energy P-O vibration located at 640 cm -1 associated with pure phosphate glass system is comparatively weaker and is shifted to higher energy at 800 cm -1 in the phosphosilicate binary glass. Despite the relative weakness of this vibrational mode, we obtained an efficient Raman fiber laser with the use of fiber Bragg gratings used to select laser oscillation using this mode. The measured slope efficiency with respect to the launched pump power was 60.4% and a maximum laser power of 1.8 W was produced. and E. V. Pershina, "Efficient silica-based Ho 3+ fibre laser for 2 µm spectral region pumped at 1.15 µm,"

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Efficient silica-based Ho3+ fibre laser for 2 [micro sign]m spectral region pumped at 1.15 [micro sign]m

Cited by 44 publications

References 4 publications

Multi-wavelength visible up-converted luminescence in novel heavily doped Ytterbium–Holmium silica fiber under low-power IR diode pumping

Multi-wavelength visible up-converted luminescence in novel heavily doped Ytterbium–Holmium silica fiber under low-power IR diode pumping

All fiber Yb-Ho pulsed laser

Raman oscillation on a new vibrational mode setup in phosphosilicate binary glass systems

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