Picosecond SESAM-Based Ytterbium Mode-Locked Fiber Lasers

Gomes, L.A.; Orsila, Lasse; Jouhti, T.; Okhotnikov, Oleg G.

doi:10.1109/jstqe.2003.822918

Cited by 149 publications

(71 citation statements)

References 21 publications

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“…Since the first GaAs-based SESAM devices were developed for 800-nm radiation [16], various semiconductor materials and compositions have been developed for other infrared ranges [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]: For 0.9-1-μm radiation, SESAMs are mostly fabricated in a form of an InGaAs multiple-quantumwell structure grown on top of a GaAs/AlAs Bragg mirror [23,30]. With such devices ML lasers based on neodymium (Nd)-and ytterbium (Yb)-doped fibers have been demonstrated [23,30].…”

Section: Review Of Sesam and Sesam-based Pmlflsmentioning

confidence: 99%

Wavelength-Tunable, Passively Mode-Locked Erbium-Doped Fiber Master-Oscillator Incorporating a Semiconductor Saturable Absorber Mirror

Vazquez-Zuniga¹,

Jeong²

2013

Journal of the Optical Society of Korea

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We briefly review the recent progress in passively mode-locked fiber lasers (PMLFLs) based on semiconductor saturable absorber mirrors (SESAMs) and discuss the detailed characterization of a SESAM-based, passively mode-locked erbium-doped fiber (EDF) laser operating in the 1.5-μm spectral range for various configurations. A simple and compact design of the laser cavity enables the PMLFL to generate either femtosecond or wavelength-tunable picosecond pulses with high stability as the intra-cavity filtering method is altered. All the cavities investigated in our experiments present self-starting, continuous-wave mode-locking with no Q-switching instabilities. The excellent stability of the source eventually enables the wavelength-tunable PMLFL to be used as a master oscillator for a power-amplifier source based on a large-core EDF, generating picosecond pulses of >10-kW peak power and >100-nJ pulse energy.

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Section: Review Of Sesam and Sesam-based Pmlflsmentioning

confidence: 99%

Wavelength-Tunable, Passively Mode-Locked Erbium-Doped Fiber Master-Oscillator Incorporating a Semiconductor Saturable Absorber Mirror

Vazquez-Zuniga¹,

Jeong²

2013

Journal of the Optical Society of Korea

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“…Based on various mode-locking techniques, e.g. nonlinear polarization rotation (NPR) [1], semiconductor saturable absorber mirrors (SESAMs) [2] and nonlinear optical loop mirrors (NOLMs) [3,4], ultrashort pulses with a duration of ~20 fs and single pulse energies of more than 10 nJ can be generated from single mode fiber laser cavities. Performance gains for such lasers is impeded by the intrinsic multi-pulsing instability [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Impact of Spectral Filtering on Multipulsing Instability in Mode-Locked Fiber Lasers

Zhang

Nakkeeran

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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Abstract-We investigate the impact of spectral filtering in mode-locked fiber lasers with an extended geometrical model. Our iterative model, which includes gain, loss and the pulse shaping effects of chromatic dispersion and selfphase modulation, is used to model the laser cavity dynamics. Simulations show that broadband pulses experience large losses from spectral filtering in the cavity, leading to a number of potential laser instabilities and outcomes such as multi-pulsing, periodic and chaotic states, or a single pulse which transitions to a higher energy state. For narrow band spectral filtering, the laser dynamics is dominated by the gain-loss dynamics in the cavity which causes multi-pulsing. For broadband spectral filtering, the nonlinearity induced spectral reshaping of the single pulse can lead to a discontinuous pulse energy transition that circumvents multi-pulsing. The inclusion of third order dispersion shows that the multi-pulsing instability is induced even in the case of broadband spectral filtering.

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“…Trade-offs between design parameters have to be made in order to obtain targeted device characteristics 10 . A tuning range over 100 nm was achieved by SESAMs in solidstate and fibre lasers 18,23 . The widest was 125 nm, for a Yb-doped fibre laser operating at 1 mm.…”

mentioning

confidence: 99%

“…The widest was 125 nm, for a Yb-doped fibre laser operating at 1 mm. However, two SESAMs with complementary spectral properties had to be used 23 . Thus, much simplified and cost-effective saturable absorbers with wideband tuneability are needed.…”

mentioning

confidence: 99%

Wideband-tuneable, nanotube mode-locked, fibre laser

et al. 2008

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Ultrashort-pulse lasers with spectral tuning capability have widespread applications in fields such as spectroscopy, biomedical research and telecommunications [1][2][3] . Mode-locked fibre lasers are convenient and powerful sources of ultrashort pulses 4 , and the inclusion of a broadband saturable absorber as a passive optical switch inside the laser cavity may offer tuneability over a range of wavelengths 5 . Semiconductor saturable absorber mirrors are widely used in fibre lasers [4][5][6] , but their operating range is typically limited to a few tens of nanometres 7,8 , and their fabrication can be challenging in the 1.3 -1.5 mm wavelength region used for optical communications 9,10 . Single-walled carbon nanotubes are excellent saturable absorbers because of their subpicosecond recovery time, low saturation intensity, polarization insensitivity, and mechanical and environmental robustness [11][12][13][14][15][16] . Here, we engineer a nanotube -polycarbonate film with a wide bandwidth (>300 nm) around 1.55 mm, and then use it to demonstrate a 2.4 ps Er 31 -doped fibre laser that is tuneable from 1,518 to 1,558 nm. In principle, different diameters and chiralities of nanotubes could be combined to enable compact, mode-locked fibre lasers that are tuneable over a much broader range of wavelengths than other systems.The development of compact, diode-pumped, ultrafast fibre lasers as alternatives for bulk solid-state lasers is fast progressing. To date, short pulse generation has been particularly effective using passive mode-locking techniques 4 . At present, the dominant technology in passively mode-locked fibre lasers is based on semiconductor saturable absorber mirrors (SESAMs) 6 . Conventional SESAMs use III -V semiconductor multiple quantum wells grown on distributed Bragg reflectors (DBRs) 3 . Their fabrication involves molecular beam epitaxy (MBE) 6 . To reduce the relaxation time to sub-picosecond levels, either postgrowth ion-implantation or low-temperature growth is normally required 6,17 . Furthermore, SESAMs are based on a resonant nonlinearity, which tends to limit wavelength tuneability 18,19 for the shortest pulse lasers 20 . Their operating bandwidth is further limited by the bottom DBR section, which has a finite bandwidth for high reflectivity 19 . For example, the bandwidth of conventional Al x Ga 12x As/AlAs SESAMs is limited to about 60 nm by the bottom Bragg mirrors 21 . Wider bandwidth, &200 nm, was achieved using novel material pairs with larger refractive index difference (for example, AlGaAs/CaF 2 ) 21 , or by replacing the DBRs with metallic mirrors 22 . However, so far, no widely tuneable mode-locked laser has been reported using these novel structures. Trade-offs between design parameters have to be made in order to obtain targeted device characteristics 10 . A tuning range over 100 nm was achieved by SESAMs in solidstate and fibre lasers 18,23 . The widest was 125 nm, for a Yb-doped fibre laser operating at 1 mm. However, two SESAMs with complementary spectral properties had to b...

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Picosecond SESAM-Based Ytterbium Mode-Locked Fiber Lasers

Cited by 149 publications

References 21 publications

Wavelength-Tunable, Passively Mode-Locked Erbium-Doped Fiber Master-Oscillator Incorporating a Semiconductor Saturable Absorber Mirror

Wavelength-Tunable, Passively Mode-Locked Erbium-Doped Fiber Master-Oscillator Incorporating a Semiconductor Saturable Absorber Mirror

Impact of Spectral Filtering on Multipulsing Instability in Mode-Locked Fiber Lasers

Wideband-tuneable, nanotube mode-locked, fibre laser

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