Characterization of ultrashort pulse formation in passively mode-locked fiber lasers

Höfer, Michael; Ober, M. H.; Haberl, F.; Fermann, M. E.

doi:10.1109/3.124997

Cited by 147 publications

(55 citation statements)

References 30 publications

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“…For mode locking, NPE in fiber 37,38,51 provides a fast artificial saturable absorber 52 that does not require any special components, but is sensitive to temperature or humidity changes. On the other hand, lasers based on real saturable absorbers, such as semiconductor saturable absorber mirrors (SESAM), can be made very environmentally stable, but typically have larger phase and amplitude noise.…”

Section: Yb:fiber Oscillatorsmentioning

confidence: 99%

High-power ultrafast Yb:fiber laser frequency combs using commercially available components and basic fiber tools

Reber

Corder

et al. 2016

Review of Scientific Instruments

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We present a detailed description of the design, construction, and performance of high-power ultrafast Yb:fiber laser frequency combs in operation in our laboratory. We discuss two such laser systems: an 87 MHz, 9 W, 85 fs laser operating at 1060 nm and an 87 MHz, 80 W, 155 fs laser operating at 1035 nm. Both are constructed using low-cost, commercially available components, and can be assembled using only basic tools for cleaving and splicing single-mode fibers. We describe practical methods for achieving and characterizing low-noise single-pulse operation and long-term stability from Yb:fiber oscillators based on nonlinear polarization evolution. Stabilization of the combs using a variety of transducers, including a new method for tuning the carrier-envelope offset frequency, is discussed. High average power is achieved through chirped-pulse amplification in simple fiber amplifiers based on double-clad photonic crystal fibers. We describe the use of these combs in several applications, including ultrasensitive femtosecond time-resolved spectroscopy and cavity-enhanced high-order harmonic generation. C 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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Section: Yb:fiber Oscillatorsmentioning

confidence: 99%

High-power ultrafast Yb:fiber laser frequency combs using commercially available components and basic fiber tools

Reber

Corder

et al. 2016

Review of Scientific Instruments

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“…The high linear absorption coefficient, modulation depth and damage threshold of InN allow the generation of high-power pulses while keeping the CW laser emission blocked. The polarization independence is an advantage over those mode-locked fiber lasers whose principle of operation is based on a nonlinear-rotationpolarization acting as the saturable absorber, which need periodical readjustment of the polarization [39][40][41]. The study of the laser output properties for high pulse energy conditions is performed by inserting additional single-mode fiber between the output coupler and the variable attenuator (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Widely power-tunable polarization-independent ultrafast mode-locked fiber laser using bulk InN as saturable absorber

Jimenez-Rodriguez¹,

Monteagudo-Lerma²,

Monroy³

et al. 2017

Opt. Express

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, 2017, "Widely power-tunable polarizationindependent ultrafast mode-locked fiber laser using bulk InN as saturable absorber", Optics Express, 25 (5), pp. 5366-5375.Available at http://dx.doi.org/10.1364/OE.25.005366 © 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. (Article begins on next page) Abstract:The growing demand of ultrafast mode-locked fiber lasers in the near infrared has boosted the research activity in this area. One of the most convenient ways to achieve passive mode locking consists of inserting a semiconductor saturable absorber in the laser cavity to modulate the losses. However, in such a configuration, the limited power range of operation is still an unsolved issue. Here we report the fabrication of an ultrafast, high-power, widely powertunable and non-polarization-dependent mode-locked fiber laser operating at 1.55 µm, using an InN layer as saturable absorber. With post-amplification, this laser delivers 55-fs pulses with a repetition rate of 4.84 MHz and peak power in the range of 1 MW in an all-fiber arrangement.

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“…In NPE, the polarization state of a beam within the laser cavity can change in an intensity-dependent way through interaction with a material. When combined with a polarizer, this nonlinear polarization rotation can be configured as a saturable absorber, where a decrease in optical loss within a laser cavity with increasing intensity is used to encourage pulse formation (modelocked operation) in laser oscillators [1,2]. The NPE mechanism is particularly flexible in that it is intrinsically fast and broad bandwidth, facilitating the shortest possible pulse duration, and is robust against damage or long-term materials degradation.…”

Section: Introductionmentioning

confidence: 99%

Electronic initiation and optimization of nonlinear polarization evolution mode-locking in a fiber laser

Winters¹,

Kirchner²,

Backus³

et al. 2017

Opt. Express

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Abstract:We describe a system for automated modelocking and optimization of a fiber laser oscillator employing nonlinear polarization evolution. Using four liquid crystal variable retarders, we fully control the fiber launch and output polarization states, enabling compensation for mechanical and environmental perturbations to the fiber cavity. We demonstrate mapping of the modelocking regions for an ANDi fiber oscillator and demonstrate that local and global optimization algorithms can be used to maintain the laser in the same operating state. This technique enables robust operation of nonlinear polarization evolution modelocked fiber lasers, rivaling the stability of PM fiber lasers while maintaining the advantages of the NPE modelocking mechanism. 694-696 (1999). 12. M. Nikodem, K. Krzempek, K. Zygadlo, G. Dudzik, A. Waz, K. Abramski, and K. Komorowska, "Intracavity polarization control in mode-locked Er-doped fibre lasers using liquid crystals," Opto-Electron. Rev.

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Characterization of ultrashort pulse formation in passively mode-locked fiber lasers

Cited by 147 publications

References 30 publications

High-power ultrafast Yb:fiber laser frequency combs using commercially available components and basic fiber tools

High-power ultrafast Yb:fiber laser frequency combs using commercially available components and basic fiber tools

Widely power-tunable polarization-independent ultrafast mode-locked fiber laser using bulk InN as saturable absorber

Electronic initiation and optimization of nonlinear polarization evolution mode-locking in a fiber laser

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