Pump bleaching of Tm-doped fiber with 793  nm pump source

Xing, Yingbin; Hong-Qi, Huang; Zhao, Nan; Liao, Lei; Li, Jinyan; Dai, Nengli

doi:10.1364/ol.40.000681

Cited by 14 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, remarkable drop of the output power is observed with the increase of the radiation dosage. This phenomenon is consistent with the experiments reported for both Yb-doped fiber lasers and Tm-doped fiber lasers [34][35][36].…”

Section: Resultssupporting

confidence: 93%

“…For low power Er-doped and Er/Yb-codoped fiber amplifiers, experiments show that, without radiation-hardening or radiation-resistant treatment, a typical gain decrease over 50% at ∼100 Gy can be expected [32,33]. For moderate power Tm-doped fiber lasers, in 2015, Li reported the degradation of a 10 W level Tm-doped fiber laser with the Tm-doped fiber exposed to gamma radiation [34,35]. Experiments show that the output power and slope efficiency of the laser decrease monotonously with the accumulation of the radiation dose.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparisons between high power fiber systems in the presence of radiation induced photodarkening

Tao¹,

Chen²,

Gao³

et al. 2022

Laser Phys.

View full text Add to dashboard Cite

Performance of high power fiber lasers and amplifiers with different pump sources are evaluated in the presence of radiation induced photodarkening in post-irradiated active fibers. Evolutions of output power and thermal mode instability threshold under different radiation doses are examined and analyzed. Severe degradation in both output power and thermal mode instability threshold is recorded for high power fiber systems with their active fibers exposed to radiations. Comparisons show that, amplifiers present a relatively better performance than lasers in adverse environments. Besides, 976 nm pump source is more favorable for high power laser sources in radioactive applications, even though 915 nm pump ensures a much lower temperature profile inside the active fiber.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Comparisons between high power fiber systems in the presence of radiation induced photodarkening

Tao¹,

Chen²,

Gao³

et al. 2022

Laser Phys.

View full text Add to dashboard Cite

show abstract

“…7 we can see that as the pump power increases, an obvious photo-bleaching phenomenon occurs, and it starts to slow down when the pump power reaches 100 mW. Related studies have shown that the photo-bleaching effect can recover part of the amplification performance of optical fibers, and that the higher the radiation dose the lesser the degree of recovery [24], [25]. In our case, the photo-bleaching effect recovers part of the amplification properties of the irradiated EDFs especially for EDFA1 at high doses.…”

Section: Resultsmentioning

confidence: 76%

Radiation-Resistant Er-Doped Fiber Based on Ge-Ce Co-Doping

et al. 2022

View full text Add to dashboard Cite

We investigated the radiation responses of Ge-Ce co-doped erbium-doped fibers (EDFs) under gamma radiation with a dose up to 1000 Gy and a dose rate of 0.2 Gy/s. Three EDFs with low or high concentrations of Ge or Ce were fabricated by modified chemical vapor deposition (MCVD). The absorption spectra and amplification performance of the three Ge-Ce co-doped EDFs before and after radiation were tested and analyzed in detail. The radiation-induced absorption (RIA) can be dramatically weakened by heavily co-doping Ge and Ce, and 0.8 dB radiation-induced gain degradation at 1550 nm was obtained in the erbium-doped fiber amplifier (EDFA) with heavy Ge and Ce doping at a dose of 1000 Gy. Furthermore, the possible mechanism of Ce and Ge effects on radiation tolerance enhancement is discussed. Relevant results indicate that the Ge-Ce co-doped EDF has significant performance improvements in radiation resistance, making it ideal for applications in harsh radiation environments.

show abstract

“…In addition, studies found that PD in Tm 3+ :ZBLAN is effectively mitigated by thermal annealing at 49°C (78) and ∼100°C (64). For Tm 3+ -doped silica fibers, it was revealed that optical irradiation at 514 (89) or 793 nm (118) alleviates the PD effect. Notably, photobrightening is now being observed in Tm 3+ -doped nanocrystals, specifically in ANPs that have experienced PD after intense 1,064-nm excitation.…”

Section: Photobrighteningmentioning

confidence: 99%

Photodarkening, Photobrightening, and the Role of Color Centers in Emerging Applications of Lanthanide-Based Upconverting Nanomaterials

Lee

Schuck

2023

Annu. Rev. Phys. Chem.

View full text Add to dashboard Cite

Upconverting nanoparticles (UCNPs) compose a class of luminescent materials that utilize the unique wavelength-converting properties of lanthanide (Ln) ions for light-harvesting applications, photonics technologies, and biological imaging and sensing experiments. Recent advances in UCNP design have shed light on the properties of local color centers, both intrinsic and controllably induced, within these materials and their potential influence on UCNP photophysics. In this review, we describe fundamental studies of color centers in Ln-based materials, including research into their origins and their roles in observed photodarkening and photobrightening mechanisms. We place particular focus on the new functionalities that are enabled by harnessing the properties of color centers within Ln-doped nanocrystals, illustrated through applications in afterglow-based bioimaging, X-ray detection, all-inorganic nanocrystal photoswitching, and fully rewritable optical patterning and memory.

show abstract

Pump bleaching of Tm-doped fiber with 793 nm pump source

Cited by 14 publications

References 25 publications

Comparisons between high power fiber systems in the presence of radiation induced photodarkening

Comparisons between high power fiber systems in the presence of radiation induced photodarkening

Radiation-Resistant Er-Doped Fiber Based on Ge-Ce Co-Doping

Photodarkening, Photobrightening, and the Role of Color Centers in Emerging Applications of Lanthanide-Based Upconverting Nanomaterials

Contact Info

Product

Resources

About