Effects of wavelength filtering on pulse dynamics in a tunable, actively Q-switched fiber laser. (1st January 2018)

• Record Type: Journal Article
• Authors: Srivastava, Manas; Venkitesh, Deepa; Srinivasan, Balaji
• Is Part Of: Optics & laser technology. Volume 98(2018)
• Page Start: 190
• Page End: 197
• Publication Date: 2018-01-01
• Subjects: Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2017.07.049
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: Numerical model to capture pulse dynamics in wavelength tunable EDF Q-switched laser. Effects of spectral filtering on pulse features studied through detailed simulations. Experimentally demonstrated wavelength and repetition rate tunable Q-switched laser. Results corroborated through theoretical arguments for various simulated conditions. Good agreement between trends of simulation and experimental results. 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.