4.8-μm CO-filled hollow-core silica fiber light source.

Mid-infrared (MIR) fiber lasers are important for a wide range of applications in sensing, spectroscopy, imaging, defense, and security. Some progress has been made in the research of MIR fiber lasers based on soft glass fibers, however, the emission range of rare-earth ions and the robustness of the host materials are still a major challenge for MIR fiber lasers. The large number of gases provide a variety of optical transitions in the MIR band.

2.3-µm single-frequency Tm: ZBLAN fiber amplifier with output power of 1.41 W.

We present here the first watt-level single-frequency thulium-doped ZBLAN fiber amplifier system operating at a wavelength of 2.3 µm. Continuous-wave output of up to 1.

Spectrally flat mid-infrared supercontinuum pumped by a high power 2 µm noise-like pulse.

We demonstrate spectrally flat high-power mid-infrared supercontinuum (MIR SC) generation with record-breaking power of 33.1 W and power conversion efficiency of 75.06%.

High-gain single-frequency Tm-doped ZBLAN fiber amplifier at 2.33 μm.

We report here, to the best of our knowledge, the first high-gain, single-frequency Tm-doped fiber amplifier operating at the 2.3-μm band with conventional ground-state pumping transition (H→H) at 793 nm. The gain fiber is an 8.

Hectowatt-level GHz burst-mode all-fiber laser based on dissipative soliton resonance.

We demonstrate a high power Yb-doped burst-mode all-fiber laser system operating at GHz intra-burst repetition rate. To our knowledge, it is the first report utilizing dissipative soliton resonance (DSR) to generate tunable burst-mode rectangular pulses. Due to the tunable duration and the rapid rise/fall time for DSR pulses, a 1-10 ns adjustable burst pulse duration is achieved.

2.1 μm, 1.52 μJ square-wave noise-like pulse from an all-fiber figure-of-9 Ho-doped oscillator and single-stage amplifier.

A 2.1 μm, high energy square-wave noise-like pulse (NLP) in an all-fiber Ho-doped fiber laser is proposed, which consists of an oscillator and a single-stage amplifier. In the figure-of-9 oscillator, mode-locking is achieved based on the nonlinear amplifying loop mirror, employing a long gain fiber to provide sufficient gain in 2.

Pulse evolution and multi-pulse state of coherently coupled polarization domain walls in a fiber ring laser.

Pulse evolution and multi-pulse state of coherently coupled polarization domain walls (PDW) is experimentally demonstrated in a novel fiber ring laser. Versatile pulse shapes benefit by wide range moving of PDW in the weakly birefringent fiber. The 8.

[Study on quality evaluation method of classical prescription Mahuang Decoction primary standard substances].

This study aimed to establish the HPLC characteristic chromatogram and content determination method for index components with the primary standard substances of the classical prescription Mahuang Decoction, and to provide data basis for the establishment of its quality standard and the development and utilization of compound preparations. First, HPLC was used to establish the material reference chromatograms of Mahuang Decoction, and 15 batches of standard samples of Mahuang Decoction were determined. Their similarity was calculated by the median method.

Mid-infrared supercontinuum generation in an all-fiberized Er-doped ZBLAN fiber amplifier.

A high power mid-infrared (MIR) supercontinuum (SC) is demonstrated in a strictly all-fiberized Er-doped ZBLAN fiber amplifier (EDZFA). The EDZFA is seeded by a 2.0-3.

High-power mid-infrared supercontinuum generation in a fluoroindate fiber with over 2 W power beyond 3.8 µm.

An all-fiber mid-infrared supercontinuum (MIR-SC) laser source with a power of over 2 W beyond 3.8 µm is demonstrated. The SC laser involves a silica-fiber-based SC laser as a pump source and a piece of fluoroindate (InF) fiber as a nonlinear medium.

Ultra-efficient, 10-watt-level mid-infrared supercontinuum generation in fluoroindate fiber.

A 10-watt-level mid-infrared supercontinuum (SC) spanning 0.8-4.7 μm with ultra-high-power conversion efficiency is generated in a piece of fluoroindate (InF) fiber.

All-fiberized, multi-watt 2-5-μm supercontinuum laser source based on fluoroindate fiber with record conversion efficiency.

A strictly all-fiberized, multi-watt 2-5-μm supercontinuum (SC) laser source with high conversion efficiency is presented. A broadband thulium-doped fiber amplifier with spectral coverage of 2-2.7 μm is used to pump a piece of single-mode fluoroindate (InF) fiber.

Watt-level mid-infrared supercontinuum generation from 2.7 to 4.25 μm in an erbium-doped ZBLAN fiber with high slope efficiency.

A watt-level mid-infrared supercontinuum (MIR-SC) spanning 2.7 to 4.25 μm is generated in an erbium-doped ZrF-BaF-LaF-AlF-NaF (ZBLAN) fiber amplifier (EDZFA).

[A multi-center, double-blind, placebo-controlled, randomized trial for effect of Longxue Tongluo capsule in treatment of patients of atherosclerotic thrombotic cerebral infarction with blood-stasis syndrome in convalescence].

To evaluate the effectiveness and safety of Longxue Tongluo capsule on patients of atherosclerotic thrombotic cerebral infarction convalescence with blood-stasis syndrome, a double-blind, randomized controlled, multi-center clinical trial was conducted. A total of 160 eligible patients were randomly divided into treatment group and control group, with 80 patients in each group, and all of them were orally given Troxerutin pill(three pills each time, three times daily). Longxue Tongluo capsule was applied in the treatment group, while placebo was applied in the control group(two capsules each time, three times daily) for 4 weeks.

15.2 W spectrally flat all-fiber supercontinuum laser source with >1 W power beyond 3.8 μm.

In this Letter, a high-power 1.9-4.2 μm supercontinuum (SC) laser source with a real all-fiber structure is reported.

1.9-3.6 μm supercontinuum generation in a very short highly nonlinear germania fiber with a high mid-infrared power ratio.

In this Letter, a high-power supercontinuum (SC) laser source which spanned from 1.9 to 3.6 μm with an all-fiber configuration was reported.

Mid-infrared supercontinuum generation in step-index AsS fibers pumped by a nanosecond shortwave-infrared supercontinuum pump source.

A supercontinuum (SC) source spanning from 2 to 4 μm is demonstrated in AsS-chalcogenide fibers pumped by a nanosecond supercontinuum pump source in the normal dispersion region. In this experiment, two pieces of 3-m-long step-index AsS fiber with different core diameters of 7 μm and 9 μm are pumped by a 1.9-2.

Mid-infrared supercontinuum generation based on cascaded Raman scattering in a few-mode AsS fiber pumped by a thulium-doped fiber laser.

By pumping a 1.7-m-long AsS fiber at 2050 nm directly, a fiber-based mid-infrared supercontinuum (SC) source with an output power of 366 mW is demonstrated. This is the first experimental demonstration to obtain such a mid-infrared SC in a piece of chalcogenide fiber pumped at 2 μm directly.

0.6-3.2 μm supercontinuum generation in a step-index germania-core fiber using a 4.4 kW peak-power pump laser.

An ultra-broadband supercontinuum was generated in a short piece of step-index germania-core fiber using a fiber laser with a peak power of 4.4 kW. The pure germania core made this fiber capable of propagating light towards the desirable mid-infrared region.

[Adverse reactions and countermeasures of drugs for children in China].

In recent years, the clinical medication safety for children has gained wide public concern. Because of the growth and development characteristics of the children and drug usage conditions for children, the adverse reactions of drugs in clinic are more common in children than those in adults. In this paper, the common adverse drug reactions and their causes would be briefly introduced, and some suggestions would be put forward on how to reduce the incidence of adverse drug reactions.

Highly stable, monolithic, single-mode mid-infrared supercontinuum source based on low-loss fusion spliced silica and fluoride fibers.

A 0.8 to 4.5 μm highly stable all-fiber spliced mid-infrared supercontinuum (SC) source was presented.

1 mJ nanosecond all-fiber thulium-doped fiber laser at 2.05 μm.

A high energy all-fiber format nanosecond thulium-doped fiber laser at 2050 nm with a master oscillator power amplifier (MOPA) configuration is presented in this paper. The seed oscillator is a linearly polarized gain-switched fiber laser pumped by a 1550 nm fiber laser. The output pulse of the seed has a polarization extinction ratio (PER) better than 16 dB with a maximal output power of 470 mW.

[Optimization of one-step pelletization technology of Jiuwei Xifeng granules by response surface methodology].

Using the qualified rates of particles as the evaluation indexes, the impact tactors of one-step pelletization technology of Jiuwei Xifeng granules were selected from six factors by the Plackett-Burman experimental design and the levels of non-significant factors were identified. According to the Plackett-Burman experimental design, choosing the qualified rates of particles and angle of repose as the evaluation indexes, three levels of the three factors were selected by Box-Behnken of central composite design to optimize the experimental. The best conditions were as follows: the fluid extract was sprayed with frequency of 29 r .