We present the design and construction of an all-fiber high-power optical parametric chirped-pulse amplifier working at 1700 nm, an important wavelength for bio-photonics and medical treatments. The laser delivers 1.42 W of output average power at 1700 nm, which corresponds to ∼40 nJ pulse energy. The pulse can be de-chirped with a conventional grating pair compressor to ∼450 fs. Furthermore, the laser has a stable performance with relative intensity noise typically below the -130 dBc/Hz level for the idler pulses at 1700 nm from 10kHz to 16.95 MHz, half of the laser repetition rate f/2.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7053498 | PMC |
http://dx.doi.org/10.1364/OE.384185 | DOI Listing |
In this paper, fiber Bragg gratings (FBGs) are inscribed in Tm-doped fluorotellurite glass fiber (TDFTF) and applied to construction of a 2.3-µm all-fiber laser. The FBGs with a center wavelength of 2.
View Article and Find Full Text PDFWith the superpositions of spin and orbital angular momentum, vectorial vortex beams (VVBs) have attracted great attention in recent years. Many approaches have been developed to generate such beams, but high-power output is not supported. Here, we report the coherent beam combining (CBC) for generating VVBs that are compatible with high-power fiber amplifiers.
View Article and Find Full Text PDFCoherent beam combining (CBC) is a promising technique to realize high-brightness laser output. As a key point to implement CBC, an appropriate phase control feedback structure should be established. With the advantages of a compact structure and no requirement for mirrors to sample, the all-fiber phase control feedback structure has been widely studied.
View Article and Find Full Text PDFThe photodarkening (PD) and transverse mode instability (TMI) effects are two main factors limiting the power increase and long-term stability of high-power fiber lasers. A prolonged burn-in test for an all-fiber laser oscillator below the TMI threshold was carried out. We observed the PD-induced TMI effects, which manifested as a sudden decrease in the output power due to higher-order mode leakage.
View Article and Find Full Text PDFACS Appl Mater Interfaces
November 2024
Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
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