High efficiency, monolithic fiber chirped pulse amplification system for high energy femtosecond pulse generation

Peng, Xiang; Kim, Kyungbum; Mielke, Michael; Jennings, S. G.; Masor, G.; Stohl, Dave; Chavez‐Pirson, Arturo; Dan, Nguyen Trung; Rhonehouse, Daniel L.; Zong, Jie; Churin, Dmitriy; Peyghambarian, N.

doi:10.1364/oe.21.025440

Cited by 17 publications

(5 citation statements)

References 54 publications

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“…Therefore, compared to several meters of silica fiber amplifiers, sub-50 cm highly doped phosphate fiber amplifiers are more favorable for mode-locked laser amplification because much less nonlinear distortion is experienced. Highly doped phosphate fiber amplifiers have already been used to demonstrate direct picosecond pulse amplification with low distortion and achieve mJ-level femtosecond laser using the chirped pulse amplification technique [35][36][37].…”

Section: High Energy Phosphate Fiber Amplifiersmentioning

confidence: 99%

“…An average output power of 1.425 W at a repetition rate of 70 MHz, corresponding to a pulse energy and peak power of 20.4 nJ and 16.6 kW, respectively, was obtained with a 15 cm long fiber with a core size of 14 μm. In [36], a 2 wt% Er 3+ -doped phosphate , ultrashort pulses with pulse energy >140 μJ and average power of 14 W were obtained with a 20-cm long gain fiber at a 1480 nm pump power of 40 W. A peak power of ~160 MW was obtained with the compressed pulses. This 2 wt% Er 3+ -doped phosphate fiber yields a gain of 1.443 dB/cm with a slope efficiency >45% for the 100 kHz repetition rate pulses.…”

Section: High Energy Phosphate Fiber Amplifiersmentioning

confidence: 99%

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Nonsilica Oxide Glass Fiber Laser Sources: Part II

Zhu¹,

Chavez‐Pirson²,

Milanese³

et al. 2018

Advances in Glass Science and Technology

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Nonsilica oxide glasses have been developed and studied for many years as promising alternatives to the most used silica glass for the development of optical fiber lasers with unique characteristics. Their main properties and compositions, alongside the optical fiber fabrication principle, have been previously reviewed in part I. This chapter will review the development of optical fiber lasers operating in the infrared wavelength region based on nonsilica glass fiber materials, either phosphate, germanate or tellurite.

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Section: High Energy Phosphate Fiber Amplifiersmentioning

confidence: 99%

Section: High Energy Phosphate Fiber Amplifiersmentioning

confidence: 99%

Nonsilica Oxide Glass Fiber Laser Sources: Part II

Zhu¹,

Chavez‐Pirson²,

Milanese³

et al. 2018

Advances in Glass Science and Technology

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“…Shortening the fiber length and increasing the mode area are effective ways to reduce fiber nonlinearity. So, highdoped fiber should be considered to dramatically shorten the fiber length-for example, high-efficiency media gain fiber [35]. Moreover, special fiber should be designed to enlarge the mode area and maintain high beam quality, such as largepitch fiber [36], chirally coupled core fiber [37] and tapered fiber [38,39].…”

Section: Strategies For Suppressionmentioning

confidence: 99%

Influence of temporal–spectral effects on ultrafast fiber coherent polarization beam combining system

Yu¹,

F²,

Wang³

et al. 2015

Laser Phys. Lett.

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The active coherent polarization beam combining (CPBC) technique has been experimentally proved to be a promising approach for the energy and power scaling of ultrashort laser pulses, despite the tremendous challenge in temporal synchronization, dispersion management and nonlinearity control. In order to develop a comprehensive theoretical model to investigate the influence of temporal-spectral effects on ultrafast fiber active CPBC systems, a generalized nonlinear Schrödinger equation carrying spectral factors is used to depict the propagation of ultrashort pulses in fiber amplifier channels and ultrashort-pulsed Gaussian beams (PGBs) carrying temporal-spatial factors are utilized to picture the propagation of ultrashort pulses in the free space. To the best of our knowledge, the influence of different temporal-spectral effects has been segregated for the first time and corresponding analytical equations have been strictly derived to link the combining efficiency with specific factors. Based on our analysis, the optical path difference (OPD) has the most detrimental impact on the combining efficiency because of the high controlling accuracy and anti-interference requirements. For instance, the OPD must be controlled in ~ ±14 μm to achieve a combining efficiency of above 95% for combining ultrashort laser pulses with a 3 dB spectral bandwidth of 13 nm centered at 1064 nm. Besides, the analytical expression also demonstrates that the impact of self-phase modulation on the combining efficiency has no dependence on spectral bandwidth and only depends on the B integral difference if neglecting the direct influence of the peak power difference. Our analysis also indicates that the group velocity dispersion has relatively small influence on the combining efficiency. These formulas can be used to diagnose the influence of temporal-spectral effects and provide useful guidelines for the design or optimization of the active CPBC system of ultrafast fiber chirped-pulse amplifiers.

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“…Recently phosphates have been also proposed as highefficiency media for the realization of a novel monolithic fiber chirped pulse amplification system for high-energy femtosecond pulse generation [21].…”

Section: Introductionmentioning

confidence: 99%

High concentration Yb-Er co-doped phosphate glass for optical fiber amplification

Boetti

Scarpignato

Lousteau

et al. 2015

J. Opt.

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We present the fabrication and characterization of two high concentration Yb 3+ -Er 3+ co-doped double clad phosphate glass optical fibers (named A and B for short) manufactured by preform drawing, with the preform being obtained by the rod-in-tube technique. Optical amplification was demonstrated by core pumping 27 mm of fiber A (7/25/70 μm and NA = 0.17 between core and inner cladding) with a laser diode at 976 nm, achieving a 10.7 dB internal gain, i.e., 4.0 dB cm −1 , for small signal input at 1535 nm. Amplification was also demonstrated in a cladding-pumped counter propagating configuration using both fibers A and B (12/48/140 μm and NA = 0.08). A maximum internal gain of 18.5 dB was achieved with 8 cm of fiber B, corresponding to an amplification of 2.3 dB cm −1 , for small signal input at 1535 nm.

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High efficiency, monolithic fiber chirped pulse amplification system for high energy femtosecond pulse generation

Cited by 17 publications

References 54 publications

Nonsilica Oxide Glass Fiber Laser Sources: Part II

Nonsilica Oxide Glass Fiber Laser Sources: Part II

Influence of temporal–spectral effects on ultrafast fiber coherent polarization beam combining system

High concentration Yb-Er co-doped phosphate glass for optical fiber amplification

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