Two-color optically synchronized ultrashort pulses from a Tm/Yb-co-doped fiber amplifier.

A method of producing high quality, optically synchronized two-color ultrashort pulses in an active thulium-doped fiber is proposed. We show that sech-shaped femtosecond pulses with essentially different wavelengths can be generated directly from a Tm/Yb-co-doped amplifier: one pulse at about 2 μm and the second pulse with a tunable wavelength up to 2.3 μm, which covers the pump and gain regions of Cr:ZnSe and Cr:ZnS amplifiers. The shortest pulses with durations of 145 fs at 2.25 μm and 125 fs at 2 μm were measured by the FROG (frequency-resolved optical gating) technique.

[1]  Takenobu Suzuki,et al.  Supercontinuum generation spanning over three octaves from UV to 3.85 microm in a fluoride fiber. , 2009, Optics letters.

[2]  M Ibsen,et al.  100 kW peak power picosecond thulium-doped fiber amplifier system seeded by a gain-switched diode laser at 2 μm. , 2013, Optics letters.

[3]  Shibin Jiang,et al.  High-spectral-flatness mid-infrared supercontinuum generated from a Tm-doped fiber amplifier. , 2012, Applied optics.

[4]  O. Okhotnikov,et al.  600-fs Mode-Locked Tm–Ho-Doped Fiber Laser Synchronized to Optical Clock With Optically Driven Semiconductor Saturable Absorber , 2011, IEEE Photonics Technology Letters.

[5]  Adnan Kurt,et al.  Kerr-lens mode-locked femtosecond Cr(2+):ZnSe laser at 2420 nm. , 2009, Optics letters.

[6]  I Hartl,et al.  Widely tunable midinfrared difference frequency generation in orientation-patterned GaAs pumped with a femtosecond Tm-fiber system. , 2012, Optics letters.

[7]  N. Coluccelli,et al.  Single-clad Tm-Ho:fiber amplifier for high-power sub-100-fs pulses around 1.9 μm. , 2013, Optics letters.

[8]  M. Guina,et al.  Tunable Raman Soliton Source Using Mode-Locked Tm–Ho Fiber Laser , 2007, IEEE Photonics Technology Letters.

[9]  Kun Liu,et al.  High average power picosecond pulse and supercontinuum generation from a thulium-doped, all-fiber amplifier. , 2013, Optics letters.

[10]  V. Mashinsky,et al.  Generating tunable optical pulses over the ultrabroad range of 1.6-2.5 μm in GeO2-doped silica fibers with an Er:fiber laser source. , 2012, Optics express.

[11]  E. Desurvire,et al.  Erbium‐Doped Fiber Amplifiers: Principles and Applications , 1995 .

[12]  E. Desurvire.  Erbium-doped fiber amplifiers , 1994 .

[13]  In-Yong Park,et al.  High-harmonic generation by resonant plasmon field enhancement , 2008, Nature.

[14]  Florian Adler,et al.  High-power, hybrid Er:fiber/Tm:fiber frequency comb source in the 2 μm wavelength region. , 2012, Optics letters.

[15]  Dietmar Kracht,et al.  Ultrafast thulium-doped fiber-oscillator with pulse energy of 4.3 nJ. , 2008, Optics letters.

[16]  Tsung-Han Tsai,et al.  1.2- to 2.2-μm Tunable Raman Soliton Source Based on a Cr : Forsterite Laser and a Photonic-Crystal Fiber , 2008, IEEE Photonics Technology Letters.

[17]  Evgeni Sorokin,et al.  Kerr-lens mode-locked Cr:ZnS laser. , 2013, Optics letters.

[18]  M. Fermann,et al.  230-kW peak power femtosecond pulses from a high power tunable source based on amplification in Tm-doped fiber. , 2005, Optics express.

[19]  Alfred Leitenstorfer,et al.  Femtosecond coherent seeding of a broadband Tm:fiber amplifier by an Er:fiber system. , 2012, Optics letters.

[20]  Ferenc Krausz,et al.  Generation of sub-three-cycle, 16 TW light pulses by using noncollinear optical parametric chirped-pulse amplification. , 2009, Optics letters.

[21]  Kenneth T. V. Grattan,et al.  Energy-transfer parameters in a Tm/Yb doped single mode silica fiber , 2010 .

[22]  Evgueni M. Dianov,et al.  Mode-locked 1.93 μm thulium fiber laser with a carbon nanotube absorber , 2008 .

[23]  Elena Anashkina,et al.  All-fiber design of hybrid Er-doped laser/Yb-doped amplifier system for high-power ultrashort pulse generation. , 2010, Optics letters.

[24]  Martin Richardson,et al.  1 μJ, sub-500 fs chirped pulse amplification in a Tm-doped fiber system. , 2013, Optics letters.