An all-fiber high-power erbium-doped fiber laser (EDFL) source generating optical pulses from 200 µs to 5 ms with a stable rectangular envelope for fractional photo-rejuvenation is proposed and experimentally demonstrated. A master oscillator power amplifier (MOPA) configuration composed of a master oscillator, an acousto-optic modulator (AOM), and a one-stage amplifier is designed and employed in the EDFL to serve as an efficient laser system with excellent output performance. To avoid multistage amplifiers, the master oscillator generates 1.5 W, and a Yb-free Er-doped large-mode-area (LMA) active fiber is used for a one-stage power amplifier. There are two benefits to this approach: first, modulation of both pump and seed pulses is used to achieve clear rectangular shaped pulses without amplified spontaneous emission (ASE) growth; and second, there are no power limitations in the amplifier and undesirable 1 µm ASE compared to Er/Yb systems. We have reached 28.6 W of peak power with 26% slope efficiency limited only by available pump power, so the system can be easily scaled for achieving a higher peak power.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.455761 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Experimental datasets on synchronization in simplicial complexes.
Data Brief
December 2024
Complex System Group & GISC, Universidad Rey Juan Carlos, Madrid, 28933, Spain.
Some real-world phenomena and human-made problems have been modeled as networks where the objects form pairwise interactions. However, this is a limited approach when the existence of high-order interactions is inherent in a system, such as the brain, social networks and ecosystems. The way in which these high-order interactions affect the collective behavior of a complex system is still an open question.
View Article and Find Full Text PDFSex differences in olfactory behavior and neurophysiology in Long Evans rats.
J Neurophysiol
January 2025
Institute for Mind and Biology, The University of Chicago, Chicago, Illinois, United States.
In many species, olfactory abilities in females are more acute than those in males. Studies in humans show that women have lower olfactory thresholds and are better able to discriminate and identify odors than men. In mice, odorants elicit faster activation from a larger number of olfactory bulb glomeruli in females than in males.
View Article and Find Full Text PDFSelf-consistent approach to the dynamics of excitation energy transfer in multichromophoric systems.
J Chem Phys
November 2024
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
Article Synopsis
- Researchers have developed approximate methods to study exciton transport in molecular aggregates influenced by structured environments, moving beyond basic models that often become complex and hard to manage.
- They introduced a self-consistent Born approximation to better accommodate exciton-environment interactions and improve calculations of energy transfer dynamics in these systems.
- Their findings indicate that this new approach aligns well with more comprehensive models across various conditions, suggesting it effectively describes exciton behavior even in complex scenarios like the Fenna-Matthews-Olson complex.
In this paper, high Er concentration erbium doped fiber (EDF) and erbium-ytterbium co-doped fiber (EYDF) were fabricated for the seed and master oscillator power amplifier (MOPA) system of the single-frequency fiber laser. An in-band pumping source with the wavelength of 1535 nm was proposed to improve the efficiency in the ring-cavity. A slope efficiency of 23.
View Article and Find Full Text PDFDynamics of a small quantum system open to a bath with thermostat.
Phys Rev E
October 2024
Center for Theoretical Physics, Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea.
We investigate dynamics of a small quantum system open to a bath with thermostat. We introduce another bath, called a superbath, weakly coupled with the bath to provide it with a thermostat, which has either the Lindblad or Redfield type. We treat the interaction between the system and bath via a rigorous perturbation theory.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!