scholarly journals All-fiber ultrafast amplifier at 1.9 μm based on thulium-doped normal dispersion fiber and LMA fiber compressor

2021 ◽  
Author(s):  
Vasilii Voropaev ◽  
Daniil Batov ◽  
Andrey Voronets ◽  
Dmitrii Vlasov ◽  
Rana Jafari ◽  
...  
Keyword(s):  
Peak Power ◽  
Ultrafast Lasers ◽  
Second Harmonic ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Fiber Amplifier ◽  
Pulse Generation ◽  
Central Wavelength ◽  
Normal Dispersion ◽  
Optical Gating

Abstract The duration reduction and the peak power increase of ultrashort pulses generated by all-fiber sources at a wavelength of 1.9 μm are an urgent tasks. Finding an effective and easy way to improve these characteristics of ultrafast lasers can allow a broad implementation of wideband coherent supercontinuum sources in the mid-IR range required for various applications. As an alternative approach of sub-100 fs pulse generation we present an ultrafast all-fiber amplifier based on a normal-dispersion germanosilicate thulium-doped active fiber and a large-mode-area silica-fiber compressor. The output pulses have the following characteristics: the pulse duration of 71 fs, the central wavelength of 1.9 μm, the repetition rate of 23.8 MHz, the energy per pulse period of 25 nJ, the average power of 600 mW, the maximum estimated peak power of 220 kW, and a random output polarization. The pulse intensity and phase profiles were measured via the second-harmonic-generation frequency-resolved optical gating technique. The dynamics of ultrashort pulses propagation in the amplifier was analyzed using numerical simulation.

scholarly journals All-fiber ultrafast amplifier at 1.9 μm based on thulium-doped normal dispersion fiber and LMA fiber compressor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vasilii Voropaev ◽  
Daniil Batov ◽  
Andrey Voronets ◽  
Dmitrii Vlasov ◽  
Rana Jafari ◽  
...  
Keyword(s):  
Peak Power ◽  
Ultrafast Lasers ◽  
Second Harmonic ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Fiber Amplifier ◽  
Pulse Generation ◽  
Central Wavelength ◽  
Normal Dispersion ◽  
Linearly Polarized

AbstractThe duration reduction and the peak power increase of ultrashort pulses generated by all-fiber sources at a wavelength of $$1.9\,\upmu \hbox {m}$$ 1.9 μ m are urgent tasks. Finding an effective and easy way to improve these characteristics of ultrafast lasers can allow a broad implementation of wideband coherent supercontinuum sources in the mid-IR range required for various applications. As an alternative approach to sub-100 fs pulse generation, we present an ultrafast all-fiber amplifier based on a normal-dispersion germanosilicate thulium-doped active fiber and a large-mode-area silica-fiber compressor. The output pulses have the following characteristics: the central wavelength of $$1.9\,\upmu \hbox {m}$$ 1.9 μ m , the repetition rate of 23.8 MHz, the energy per pulse period of 25 nJ, the average power of 600 mW, and a random output polarization. The pulse intensity and phase profiles were measured via the second-harmonic-generation frequency-resolved optical gating technique for a linearly polarized pulse. The linearly polarized pulse has a duration of 71 fs and a peak power of 128.7 kW. The maximum estimated peak power for all polarizations is 220 kW. The dynamics of ultrashort-pulse propagation in the amplifier were analyzed using numerical simulations.

scholarly journals Pre-chirping management of a self-similar Yb-fiber amplifier towards 80 W average power with sub-40 fs pulse generation

2014 ◽  
Vol 22 (26) ◽  
pp. 32214 ◽  
Author(s):  
Jian Zhao ◽  
Wenxue Li ◽  
Chao Wang ◽  
Yang Liu ◽  
Heping Zeng
Keyword(s):  
Average Power ◽  
Fiber Amplifier ◽  
Pulse Generation ◽  
Self Similar

71 W Average Power Sub-MW Peak Power Diffraction-Limited Monolithic Tapered Fiber Amplifier

2019 ◽  
Author(s):  
Konstantin K. Bobkov ◽  
Mikhail E. Likhachev ◽  
Andrey E. Levchenko ◽  
Vladimir V. Velmiskin ◽  
Tatyana A. Kochergina ◽  
...  
Keyword(s):  
Peak Power ◽  
Average Power ◽  
Fiber Amplifier ◽  
Tapered Fiber

scholarly journals Generation of 100 nJ pulse, 1 W average power at from an intermode beating mode-locked all-fiber laser

2019 ◽  
Vol 7 ◽  
Author(s):  
Jiaji Zhang ◽  
Duanduan Wu ◽  
Ruwei Zhao ◽  
Rongping Wang ◽  
Shixun Dai
Keyword(s):  
Fiber Laser ◽  
Signal To Noise Ratio ◽  
Average Power ◽  
Longitudinal Mode ◽  
Laser Cavity ◽  
Pulse Frequency ◽  
Pulse Generation ◽  
Average Output ◽  
Central Wavelength ◽  
Fundamental Pulse

We report on the investigation of intermode beating mode-locked (IBML) pulse generation in a simple all-fiber Tm $^{3+}$ -doped double clad fiber laser (TDFL). This IBML TDFL is implemented by matching longitudinal-mode frequency between 793 nm laser and TDFL without extra mode locker. The central wavelength of ${\sim}1983~\text{nm}$ , the fundamental pulse frequency of ${\sim}9.6~\text{MHz}$ and the signal-to-noise ratio (SNR) of ${>}50~\text{dB}$ are achieved in this IBML TDFL. With laser cavity optimization, the IBML TDFL can finally generate an average output power of 1.03 W with corresponding pulse energy of ${\sim}107~\text{nJ}$ . These results can provide an easily accessible way to develop compact large-energy, high-power TDFLs.

Multiwatt average power continua generation in holey fibers pumped by kilowatt peak power seeded ytterbium fiber amplifier

2002 ◽  
Vol 81 (12) ◽  
pp. 2157-2159 ◽  
Author(s):  
P. A. Champert ◽  
S. V. Popov ◽  
M. A. Solodyankin ◽  
J. R. Taylor
Keyword(s):  
Peak Power ◽  
Average Power ◽  
Fiber Amplifier

scholarly journals Properties of Scalable Chirped-Pulse Optical Comb in Erbium-Doped Ultrafast All-Fiber Ring Laser

Fibers ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 36
Author(s):  
Ilya О. Orekhov ◽  
Dmitriy A. Dvoretskiy ◽  
Stanislav G. Sazonkin ◽  
Yan Zh. Ososkov ◽  
Anton О. Chernutsky ◽  
...  
Keyword(s):  
Peak Power ◽  
Signal To Noise Ratio ◽  
Average Power ◽  
Pulse Generation ◽  
Short Term ◽  
Fiber Ring ◽  
Average Output ◽  
Chirped Pulse ◽  
Erbium Doped ◽  
Er Doped

We report on a scalable chirped-pulse Er-doped all-fiber laser, passively mode-locked by single-wall carbon nitride nanotubes. The average output power is ~15 mW, which corresponds to a peak power of ~77 W, and pulse energy of ~1.9 nJ and was achieved using a single amplification stage. We observed chirped-pulse generation with a duration of ~24.6 ps at a relatively low repetition rate of ~7.9 MHz, with a signal-to-noise ratio of ~69 dB. To characterize the short-term stability of the obtained regime, we have measured the relative intensity noise of the laser, which is <−107 dBc/Hz in the range of 3 Hz–1000 kHz. It should be noted that the standard deviation of root mean square of average power does not exceed a magnitude of 0.9% for 3 h of measurement.

Sign in / Sign up

Export Citation Format

Share Document