Supercontinuum from single- and double-scale fiber laser pulses in long extra-cavity P2O5-doped silica fiber

This work discusses the results of research into comparative efficiency of non-linear transformation of picosecond single- and double-scale fibre laser pulses in generation of Raman-dominated supercontinuum (SC) due to cascaded stimulated Raman scattering of these pulses in a long extra-cavity fibre. We demonstrate properties of SC formed by superposition of spectra of several Stokes components when pumped with pulses of different structure. More efficient Raman transformation of double-scale pulses was identified, leading to broader SC spectra. The work presents features of temporal distributions of radiation intensity of single- and double-scale pulses-induced SC at different average input powers.

[1]  Krzysztof Jakubczak,et al.  Laser Systems for Applications , 2011 .

[2]  Jörg Neumann,et al.  Picosecond all-fiber cascaded Raman shifter pumped by an amplified gain switched laser diode. , 2011, Optics express.

[3]  J. Gordon,et al.  Theory of the soliton self-frequency shift. , 1986, Optics letters.

[4]  Kevin K. Tsia,et al.  Enhanced supercontinuum generation in the normal dispersion pumping regime by seeded dispersive wave emission and stimulated Raman scattering , 2014 .

[5]  Sergey Kobtsev,et al.  Generation of double-scale femto/pico-second optical lumps in mode-locked fiber lasers. , 2009, Optics express.

[6]  Martin E. Fermann.  Compact sources of ultrashort pulses: Nonlinear polarization evolution in passively modelocked fiber lasers , 1995 .

[7]  Y. S. Fedotov,et al.  High-energy Q-switched fiber laser based on the side-pumped active fiber , 2008 .

[8]  D. Mao,et al.  Supercontinuum generation in standard single-mode fiber pumped by a nanosecond-pulse laser , 2012 .

[9]  Sergey Kobtsev,et al.  Three key regimes of single pulse generation per round trip of all-normal-dispersion fiber lasers mode-locked with nonlinear polarization rotation. , 2012, Optics express.

[10]  Y. Silberberg,et al.  Noiselike pulses with a broadband spectrum generated from an erbium-doped fiber laser. , 1997, Optics letters.

[11]  Sergei K. Turitsyn,et al.  Mode-Locked Fibre Lasers with High-Energy Pulses , 2011 .

[12]  Sergey Kobtsev,et al.  Improvement of Raman amplifier gain flatness by broadband pumping sources , 2004 .

[13]  Sergey Kobtsev,et al.  Generation of Self-Frequency-Shifted Solitons in Tapered Fibers in the Presence of Femtosecond Pumping , 2004 .

[14]  S. Kobtsev,et al.  Modelling of high-power supercontinuum generation in highly nonlinear, dispersion shifted fibers at CW pump. , 2005, Optics express.

[15]  G. Agrawal,et al.  Stimulated Raman scattering cascade spanning the wavelength range of 523 to 1750 nm using a graded-index multimode optical fiber , 2013, 1301.6203.

[16]  Sergey Kobtsev,et al.  Ultra-low repetition rate mode-locked fiber laser with high-energy pulses. , 2008, Optics express.

[17]  Sergei K. Turitsyn,et al.  Optical spectral broadening and supercontinuum generation in telecom applications , 2006 .

[18]  Ci-Ling Pan,et al.  Supercontinuum generation by noise-like pulses transmitted through normally dispersive standard single-mode fibers. , 2013, Optics express.

[19]  Sergei K. Turitsyn,et al.  Mode-locked fiber lasers with significant variability of generation regimes , 2014 .

[20]  Sergey Kobtsev,et al.  Fiber lasers mode-locked due to nonlinear polarization evolution: Golden mean of cavity length , 2011 .

[21]  A. Aalto,et al.  Wavelength correlation maps in Raman supercontinuum generation , 2013, 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC.

[22]  Sergey Kobtsev,et al.  Coherent, polarization and temporal properties of self-frequency shifted solitons generated in polarization-maintaining microstructured fibre , 2005 .

[23]  Goëry Genty,et al.  Extreme-value statistics in supercontinuum generation by cascaded stimulated Raman scattering , 2010 .

[24]  Toru Mizunami,et al.  Gain saturation characteristics of Raman amplification in silica and fluoride glass optical fibers , 1993 .

[25]  Ke Yin,et al.  Over an octave cascaded Raman scattering in short highly germanium-doped silica fiber. , 2013, Optics express.

[26]  Takenobu Suzuki,et al.  Five-order SRSs and supercontinuum generation from a tapered tellurite microstructured fiber with longitudinally varying dispersion. , 2011, Optics express.

[27]  Sergey Kobtsev,et al.  Automatic electronic-controlled mode locking self-start in fibre lasers with non-linear polarisation evolution. , 2013, Optics express.

[28]  S. Smirnov,et al.  Efficiency of non-linear frequency conversion of double-scale pico-femtosecond pulses of passively mode-locked fiber laser. , 2014, Optics express.

[29]  Sergey Kobtsev,et al.  All-fiber Raman supercontinuum generator , 2010 .