Gain-switched holmium-doped fibre laser

Wu, Ka S.; Ottaway, D. J.; Münch, J.; Lancaster, David G.; Bennetts, Shayne; Jackson, Stuart D.

doi:10.1364/oe.17.020872

Cited by 49 publications

(18 citation statements)

References 9 publications

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“…Tapered fibres (or micro-fibres) may also produce an interaction of CNT with the evanescent field of the guided light in the fibre [50,218,219]. In this case, CNTs are deposited around the tapered section of the fibre, or the tapered part of the fibre is placed into a CNT-polymer composite when the polymer is in a liquid phase.…”

Section: Evanescent Field Interactionmentioning

confidence: 99%

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Carbon nanotubes for ultrafast fibre lasers

et al. 2016

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Carbon nanotubes (CNTs) possess both remarkable optical properties and high potential for integration in various photonic devices. We overview, here, recent progress in CNT applications in fibre optics putting particular emphasis on fibre lasers. We discuss fabrication and characterisation of different CNTs, development of CNTbased saturable absorbers (CNT-SA), their integration and operation in fibre laser cavities putting emphasis on stateof-the-art fibre lasers, mode locked using CNT-SA. We discuss new design concepts of high-performance ultrafast operation fibre lasers covering ytterbium (Yb), bismuth (Bi), erbium (Er), thulium (Tm) and holmium (Ho)-doped fibre lasers.

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Section: Evanescent Field Interactionmentioning

confidence: 99%

“…Only a few works were focused on Ho-doped ultrafast lasers, utilising gain switching [219], fibre-based SA [246] and quantum dot-doped glass absorbers [247]. In 2009, the new approach of Tm:Ho-doped fibre application has been demonstrated [63].…”

Section: Holmium (Ho)-doped Fibre Lasersmentioning

confidence: 99%

Carbon nanotubes for ultrafast fibre lasers

et al. 2016

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“…The only experimental examples of pulsed resonant pumping we are aware of involve pulsed pumping of Holmium [26,27] or Thulium [28][29][30] gain-switched fiber lasers (1940 nm) in order to regulate the usually chaotic pulse generation, and the average powers have been at the <8 W level.…”

Section: Discussionmentioning

confidence: 99%

Sub-Microsecond Pulsed Pumping as a Means of Suppressing Amplified Spontaneous Emission in Tandem Pumped Fiber Amplifiers

Malinowski

Price

Zervas³

2015

IEEE J. Quantum Electron.

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Abstract-We propose a new tandem pumping scheme in threelevel rare-earth doped optical fibers where energy storage in a pump fiber laser enables much shorter (~500 ns) pump pulses than is possible with pulsed diode laser pumping. This has the effect of reducing the time during which the final amplifier has high inversion and hence reduces the ASE when compared to continuous wave (c.w.) tandem pumping. We simulate the gain and ASE dynamics in a pulse-pumped Yb-doped fiber amplifier and show that the ratio of amplified signal to ASE background can be improved by up to 2 orders of magnitude over a large range of pulse energies compared to c.w. tandem pumping. Sub-microsecond pulsed tandem pumping offers a relatively straightforward, as yet experimentally untried, way to substantially reduce undesirable ASE compared to the levels in diode-pumped fiber amplifiers.

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“…During the experiments we did not observe any instabilities of the output pulse such as pulse stacking [15]. We use in-band pumping which is characterized by a rapid decay from the pumping level to the upper lasing-level and it enables high energy extraction that stabilize the operation.…”

Section: Gain-switching Of the Fiber Lasermentioning

confidence: 99%

“…One downside of gain-switching is that the full capacity of the pump lasers is not utilized due to the pulsed pumping. Gain-switching is studied the most in Tmdoped lasers [9,10,13] but it has also been demonstrated in Nd-doped [14], Ho-doped [15], and Yb-doped fiber lasers [11,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Gain-switched all-fiber laser with narrow bandwidth

Larsen¹,

Giesberts²,

Nyga³

et al. 2013

Opt. Express

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Abstract:Gain-switching of a CW fiber laser is a simple and costeffective approach to generate pulses using an all-fiber system. We report on the construction of a narrow bandwidth (below 0.1 nm) gain-switched fiber laser and optimize the pulse energy and pulse duration under this constraint. The extracted pulse energy is 20 µJ in a duration of 135 ns at 7 kHz. The bandwidth increases for a higher pump pulse energy and repetition rate, and this sets the limit of the output pulse energy. A single power amplifier is added to raise the peak power to the kW-level and the pulse energy to 230 µJ while keeping the bandwidth below 0.1 nm. This allows frequency doubling in a periodically poled lithium tantalate crystal with a reasonable conversion efficiency.

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Gain-switched holmium-doped fibre laser

Cited by 49 publications

References 9 publications

Carbon nanotubes for ultrafast fibre lasers

Carbon nanotubes for ultrafast fibre lasers

Sub-Microsecond Pulsed Pumping as a Means of Suppressing Amplified Spontaneous Emission in Tandem Pumped Fiber Amplifiers

Gain-switched all-fiber laser with narrow bandwidth

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