Passively Q-switched Tm^3+, Ho^3+-doped silica fiber laser using a highly nonlinear saturable absorber and dynamic gain pulse compression

Kivistö, Samuli; Koskinen, Riku; Paajaste, J.; Jackson, Stuart D.; Guină, Mircea; Okhotnikov, Oleg G.

doi:10.1364/oe.16.022058

Cited by 52 publications

(30 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was successfully demonstrated by using different kind of saturable absorbers (SAs). There are a lot SAs that been used to generate the laser such as graphene [6], single-walled carbon nanotubes (MWCNTs) [15], [16] and semiconductor saturable absorber mirrors (SESAMs) [17]. However, SESAMs cannot be used widely due to the complexity of fabrication and not cost effective.…”

Section: Introductionmentioning

confidence: 99%

Q-Switched Ultrafast TDFL Using MWCNTs-SA at 2 µm Region

Ahmad¹,

Latiff²,

Zakaria³

et al. 2014

IJCCE

View full text Add to dashboard Cite

Abstract-We demonstrate an ultrafast TDFL Q-switched pulse in 2 µm wavelength using multi-walled carbon nanotubes (MWCNTs) as passive saturable absorber (SA). MWCNTs film is sandwiched between two fibre connectors or patch cords after deposited with index matching gel on the fibre ferrules. Thulium-doped fibre was pumped using 1552 nm source in the ring cavity. The repetition rate for the pulses can be tuned from 13.33 kHz to 21.07 kHz by varying the pump power from 307.5 mW to 371.4 mW. At the maximum power, the pulse generated energy of 87.34 nJ with full-width at half maximum (FHWM) of 8.21 µs.Index Terms-Multi-walled carbon nanotubes, passive saturabe absorber, Q-switching.

show abstract

Section: Introductionmentioning

confidence: 99%

Q-Switched Ultrafast TDFL Using MWCNTs-SA at 2 µm Region

Ahmad¹,

Latiff²,

Zakaria³

et al. 2014

IJCCE

View full text Add to dashboard Cite

show abstract

“…It exhibits high quantum efficiency and a broad gain spectrum extending from 1.8 to 2.1 µm [3]. Passive Q-switching of Tm fibre lasers has already been implemented, using a number of techniques, including multiple quantum wells [8] and Cr:ZnS or Cr:ZnSe crystals [9,10]. However, all of these implementations require additional bulk components such as mirrors or lens pairs, thus compromising the key benefits of fibre lasers, their compactness and alignment-free operation.…”

Section: Introductionmentioning

confidence: 99%

A Q-switched fibre laser operating in the 2 um region based on nonlinear polarization rotation technique

Azooz¹,

Harun²,

Ahmad³

et al. 2015

Ukr. J. Phys. Opt.

View full text Add to dashboard Cite

Abstract. We demonstrate a Q-switched fibre laser operating at 1949.0 nm, which is based on a nonlinear polarization rotation (NPR) technique. It uses a 2 m long commercial thulium-doped fibre and a 15 m long homemade thulium-ytterbium codoped fibre as active media. They are pumped respectively by 800 nm single-mode and 905 nm multimode radiations. A stable Q-switched pulse train with the repetition rate 13.49 kHz and the pulse width 3.089 s is obtained when the 905 nm and 800 nm pump powers are fixed at 2.3 W and 110.4 mW, respectively. The maximum pulse energy, 11 nJ, is obtained at the 800 nm and 905 nm pump powers equal respectively to 110.4 mW and 2.5 W. To the best of our knowledge, this is the first reported Q-switched fibre laser using the NPR technique.

show abstract

“…Unlike active Q-switching, its passive counterpart represents more convenient and cost-effective way to achieve high-energy pulses because it requires no additional switching electronics. Passive Q-switching of 2 μm fibre lasers has so far been realized with a number of techniques, including multiple quantum wells [14] and Cr:ZnS or Cr:ZnSe crystals [15,16]. However, all of these implementations require additional bulk components (mirrors, lens pairs, etc.…”

Section: Introductionmentioning

confidence: 99%

Double-clad thulium/ytterbium co-doped octagonal-shaped fibre for fibre laser applications

Babar¹,

Sabran²,

Jusoh³

et al. 2014

Ukr. J. Phys. Opt.

View full text Add to dashboard Cite

Abstract. We investigate the lasing performance of a new double-clad thulium/ytterbium co-doped octagonal-shaped fibre, basing on a cladding pump technique. The fibre is fabricated with the aid of a modified chemical vapour deposition combined with a solution doping technique. It is characterized by the Tm 3+ -and Yb 3+-cladding absorptions equal to 0.325 and 3.3 dB/m respectively at 790 and 976 nm. A triple-wavelength fibre laser operating at 1914.5, 1934.7 and 1953.6 nm is built that uses a 5 m long fibre in a ring configuration as a gain medium. With the fibre as long as 15 m, the ring laser produces the highest output power of 21.9 mW at the pump power of 3600 mW, with the lowest threshold pump power being equal to 1000 mW. When operating at 1961.4 nm, the maximal efficiency of 0.88 per cent is achieved for the gain medium length fixed at 10 m. We also demonstrate a Q-switched thulium/ytterbium-doped fibre laser that operates at 1977.5 nm and utilizes multi-walled carbon nanotubes as a gain medium. By varying the multimode 905 nm pump power from 1591.3 to 2261.5 mW, one can increase the pulse repetition rate from 18.8 to 50.6 kHz, while the pulse width then decreases from 8.6 to 1.0 µs. The maximum pulse energy 5.71 nJ is obtained at the pump power 2100 mW.

show abstract

Passively Q-switched Tm^3+, Ho^3+-doped silica fiber laser using a highly nonlinear saturable absorber and dynamic gain pulse compression

Cited by 52 publications

References 15 publications

Q-Switched Ultrafast TDFL Using MWCNTs-SA at 2 µm Region

Q-Switched Ultrafast TDFL Using MWCNTs-SA at 2 µm Region

A Q-switched fibre laser operating in the 2 um region based on nonlinear polarization rotation technique

Double-clad thulium/ytterbium co-doped octagonal-shaped fibre for fibre laser applications

Contact Info

Product

Resources

About