Design and demonstration of tunable q-switched fiber laser

doi:10.1117/12.2004161

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Journal Article•DOI•

Effects of wavelength filtering on pulse dynamics in a tunable, actively Q-switched fiber laser

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Manas Srivastava¹, Deepa Venkitesh¹, Balaji Srinivasan¹•Institutions (1)

Indian Institute of Technology Madras¹

01 Jan 2018-Optics and Laser Technology

TL;DR: In this article, the effect of wavelength filtering on pulse dynamics of a wavelength-tunable Erbium-doped fiber Q-switched laser in a ring configuration is investigated.

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Abstract: We present a numerical simulation, validated by experimental analysis, of the effect of wavelength filtering on pulse dynamics of a wavelength-tunable Erbium-doped fiber Q-switched laser in a ring configuration. Travelling wave time-dependent model is implemented using finite difference time domain (FDTD) method to accurately simulate the population dynamics and the pulse evolution in the ring laser. Such a model is experimentally validated for a wavelength tunable Q-switched fiber laser and stable Q-switched pulses are obtained over a wavelength tuning range of ∼30 nm in the C-band.

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9 citations

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Journal Article•DOI•

Highly stable tunable dual-wavelength Q-switched fiber laser for DIAL applications

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Utkarsh Sharma¹, Chang-Seok Kim¹, Jin U. Kang¹•Institutions (1)

Johns Hopkins University¹

04 May 2004-IEEE Photonics Technology Letters

TL;DR: In this article, a stable dual-wavelength Q-switched fiber laser for applications in differential absorption Lidar with tunability in absolute wavelength over several nanometers and discrete tuning in wavelength spacing from 1.1 to 3.3 nm was demonstrated.

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Abstract: We demonstrate a stable dual-wavelength Q-switched fiber laser for applications in differential absorption Lidar with tunability in absolute wavelength over several nanometers and discrete tuning in wavelength spacing from 1.1 to 3.3 nm. Single longitudinal-mode operation is also achieved by employing Sagnac loop saturable absorber filter. The delayed self homodyne linewidth measurement of the dual-wavelength continuous-wave laser shows a very narrow spectral linewidth and frequency jitter (<40 kHz). The advantages of tunable wavelengths, narrow linewidth, temperature insensitivity, and high stability in an efficient, cost effective, rugged, compact and light system make it a promising technology for airborne Lidar systems.

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144 citations

"Design and demonstration of tunable..." refers background or methods in this paper

...The numerical simulation of the laser described in Fig.(1) is performed under steady-state conditions in a filterless configuration and the L-I curves and the corresponding spectrum are recorded, as shown in Fig....
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...5 m long Erbiumdoped fiber (EDF) as the gain medium as shown in figure(1)....
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...The Q-switched laser, modeled as shown in figure(1) was simulated using a 3....
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...EXPERIMENTAL IMPLEMENTATION The EDF Q-switched fiber laser is setup in the ring configuration as shown in figure(1)....
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...The corresponding results are also shown in Fig....
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Journal Article•DOI•

Actively Q-switched fiber lasers: Switching dynamics and nonlinear processes

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Yong Wang¹, Chang-Qing Xu¹•Institutions (1)

McMaster University¹

01 Jan 2007-Progress in Quantum Electronics

TL;DR: In this article, the switching dynamics in the linear and ring fiber cavities were analyzed under different fiber, pumping and switching conditions by using the traveling wave method, which leads to a new understanding of Q-switched fiber lasers.

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97 citations

Proceedings Article•DOI•

Single-frequency, all-fiber Q-switched laser at 1550 nm

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Yushi Kaneda, Yongdan Hu, Christine Spiegelberg, Jihong Geng, Shibin Jiang - Show less +1 more

01 Feb 2004

TL;DR: In this paper, a single frequency, linear, all-fiber laser using fast stress-induced birefringence modulation was presented, achieving 25W peak power in 12-ns, 0.3-µJ pulses at a repetition rate of 80 kHz with 370 mW of pump power, without using an amplifier.

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Abstract: We present a novel actively Q-switched single frequency, linear, all-fiber laser using fast stress-induced birefringence modulation. We demonstrate 25-W peak power in 12-ns, 0.3-µJ pulses at a repetition rate of 80 kHz with 370 mW of pump power, without using an amplifier. Very effective Q-switching was also observed at 325 kHz, near the resonance frequency of the piezoelectric actuator. Using a higher pump power of 780 mW, an average output power of 85 mW and pulsewidth of 16 ns at 325 kHz PRF was observed.

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37 citations

"Design and demonstration of tunable..." refers background or methods or result in this paper

...The corresponding results are also shown in Fig....
[...]
...The numerical simulation of the laser described in Fig....
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...The laser is now experimentally tested and the corresponding results are also shown in Fig....
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...(1) is performed under steady-state conditions in a filterless configuration and the L-I curves and the corresponding spectrum are recorded, as shown in Fig.(2)....
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...The corresponding results are also shown in Fig.(2)....
[...]

Journal Article•DOI•

980 nm diode pumped erbium3+/ytterbium3+ doped Q-switched fibre laser

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Gareth P. Lees¹, Arthur H. Hartog, Andrew Leach, Trevor P. Newson¹•Institutions (1)

University of Southampton¹

12 Oct 1995-Electronics Letters

TL;DR: In this article, an acousto-optically Q-switched Erbium-3+:Ytterbium3+ diode pumped fiber laser was used to achieve 15 ns and peak power exceeding 50 W at 500Hz repetition rate.

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Abstract: We report the latest results obtained with an acousto-optically Q-switched Erbium3+:Ytterbium3+ diode pumped fibre laser. The use of Er:Yb enables short, high power pulses to be obtained. Pulse durations of 15 ns and peak powers exceeding 50 W have been achieved at 500Hz repetition rate.

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25 citations

"Design and demonstration of tunable..." refers methods in this paper

...The center wavelength of the filter was tuned across the C-band and the pulse and spectral features were compared, as shown in figure(3)....
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Journal Article•DOI•

Dual-operation Q-switched erbium-doped fibre laser for distributed fibre sensing

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K. De Souza¹, D.O. Culverhouse¹, Trevor P. Newson¹•Institutions (1)

University of Southampton¹

20 Nov 1997-Electronics Letters

TL;DR: A Q-switched erbium-doped fiber laser has been developed and configured to provide narrowband and broadband operation using an all-fibre optical switch for distributed fiber sensing based on the Landau-Placzek ratio as discussed by the authors.

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Abstract: A Q-switched erbium-doped fibre laser has been developed and configured to provide narrowband and broadband operation using an all-fibre optical switch for distributed fibre sensing based on the Landau-Placzek ratio. Narrowband operation allows filtering of the Brillouin and Rayleigh signals and broadband operation minimises coherent Rayleigh noise.

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5 citations

"Design and demonstration of tunable..." refers background in this paper

...Figure (4) shows the comparison of simulation and experimental results for filterless configuration at a repetition rate of 10 kHz and pump power of 450 mW....
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...The output pulse in the time domain is shown in figure (4)....
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Design and demonstration of tunable q-switched fiber laser

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"Design and demonstration of tunable..." refers background or methods in this paper

"Design and demonstration of tunable..." refers background or methods or result in this paper

"Design and demonstration of tunable..." refers methods in this paper

"Design and demonstration of tunable..." refers background in this paper

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