Q-switched erbium doped fibre laser utilising a novel large mode area fibre

Lees, G.P.; Taverner, D.; Richardson, D.J.; Dong, Liang; Newson, T.P.

doi:10.1049/el:19970253

Cited by 47 publications

(12 citation statements)

References 4 publications

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“…We have chosen tellurite glass fibres, which are comparatively shorter in lengths (few 10s of cms) compared with several metres of rare-earth ion doped silica fibres used in earlier investigations [2][3][4][5][6]. The tellurite glass host also provides a range of dopant-host environment, which significantly broadens the emission line shape and increases the emission and absorption cross-sections.…”

Section: Rare-earth Ion Doped Teo 2 Fibres and Comparison Of Their Spmentioning

confidence: 99%

“…It is also essential that the length of the gain medium must be optimised for minimising the fibre nonlinearity. Remarkably large Q-switched output powers (kW level) have been obtained recently in Nd 3+ -, Yb 3+ , Er 3+ , and Tm 3+ -doped silicate fibres [1][2][3][4][5][6]. In particular, El-Sherif and King [6] showed that the peak output power of 4.1 kW and pulsed duration at full-width of halfmaximum (FWHM) of 150 ns are achievable in a Q-switched Tm 3+ -doped silica fibre laser in the wavelength region near 2 µm, when laser was pumped with a Nd-YAG laser at 1.319 µm.…”

Section: Introductionmentioning

confidence: 98%

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Metal-ion-doped broadly tunable optical fiber lasers for lidar

Jha

Batchelor

Shen

2004

Laser Radar Techniques for Atmospheric Sensing

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The main objective of the paper is to demonstrate rare-earth (Tm 3+ , Er 3+ , Ho 3+ ) and transition-metal ion (Cr-ion) doped glass fibres as potential broadly tunable laser devices. The paper will discuss the spectroscopy of metal ions and suitability of glass hosts for designing efficient devices, which can be pumped using commercially available semiconductor or fibre-based IR laser sources, e.g. at 800, 980, 1020, 1040, and 1480 nm wavelengths. The spectroscopic properties of transition metal ion-host systems are compared briefly with those of crystal based devices. Results of the measured spectroscopic properties for Cr-ion and rare-earth ion doped fibre systems particularly pumped using NIR wavelength from Ti-sapphire sources are also reported.

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Section: Rare-earth Ion Doped Teo 2 Fibres and Comparison Of Their Spmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Metal-ion-doped broadly tunable optical fiber lasers for lidar

Jha

Batchelor

Shen

2004

Laser Radar Techniques for Atmospheric Sensing

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“…Nevertheless, the main trend in the development of high-power pulsed laser sources has consisted in improving the laser material and pump system rather than in investigating the processes that take place inside of the laser resonator. As a result of these efforts photonic-crystal fibers of very complex design [3], large modal diameter fibers [4], [5] and double-clad fibers [6] have been demonstrated as laser components suitable for generating more powerful laser pulses. Some excellent results have been obtained using these laser components [7], [8], but still the availability of a such components is very poor.…”

Section: Introductionmentioning

confidence: 99%

“…(1) Modal area (2) This work (3) Special Large Modal Area fibre (4) Passive QS-EDFL (5) Typical actively QS-EDFL based on communication fibres…”

Section: Introductionmentioning

confidence: 99%

Optimization of Erbium-Doped Actively Q-Switched Fiber Laser Implemented in Symmetric Configuration

Kolpakov

Sergeyev

Mou

et al. 2014

IEEE J. Select. Topics Quantum Electron.

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Abstract-We report the results of an experimental study aimed at improving the performance of actively Q-switched fiber lasers. Unlike generic design schemes employing photonic crystal fibers, large modal diameter fibers or double-clad fibers, we demonstrate a high-power, actively Q-switched laser based on standard communication erbium doped fibers with peak irradiance beyond the state-of-the-art at 3.1 GW/cm 2 . The laser had 2.2 kW peak power, 15 ns pulse duration, 36.8 μJ pulse energy. We have also investigated the dynamics of pulse generation and have successfully suppressed pulse instabilities caused by backscattered laser emission reaching the pump laser diodes.

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“…Both applications require high energy per pulse. Most often, practical systems require scanning a certain field of view, pushing the pulse repetition rate in the 10-50kHz range eliminating classic Q-switch fiber lasers [1] [4][5][6][7][8][9] [14]. Different amplification schemes can be used as alternatives to produce high energy, high repetition rate pulses via a gated amplification [2][1 1} [12] or simply through multiple isolated gain stages [3][10] [13].…”

Section: Introductionmentioning

confidence: 99%

High-power amplification of a pulsed fiber laser

LaRose

Mathieu²

1998

SPIE Proceedings

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Pulsed Fiber laser sources are attractive in terms of simpler delivery to a scanning head, small rugged all-fiber design and good power efficiency. For practical systems both high repetition rate and high energy are required along with single spathi mode output. Increasing in practice the pump power launched in a singlemode fiber is not simple and even then, serious pulse sharpening occurs in high gain fiber amplifier. In order to increase the energy with minimal pulse shaping , we have investigate the use of slightly multimode fibers seeded by a singlemode laser source. We achieved more than 4OiJ at 10kHz for a iOns pulse with a good spatial mode and small pulse sharpening. Being able to shape the input pulse, we demonstrate that pre-compensation is possible to maintain uniform peak power over the output pulse.

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Q-switched erbium doped fibre laser utilising a novel large mode area fibre

Cited by 47 publications

References 4 publications

Metal-ion-doped broadly tunable optical fiber lasers for lidar

Metal-ion-doped broadly tunable optical fiber lasers for lidar

Optimization of Erbium-Doped Actively Q-Switched Fiber Laser Implemented in Symmetric Configuration

High-power amplification of a pulsed fiber laser

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