Changsheng Yang
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View article: Hybrid dual-wavelength pumped gain-switched single-frequency pulsed Tm-doped fiber laser at 2.1 μm
Hybrid dual-wavelength pumped gain-switched single-frequency pulsed Tm-doped fiber laser at 2.1 μm Open
An efficient gain-switched single-frequency pulsed Tm3+-doped fiber laser at 2.1 μm based on a distributed Bragg reflector short cavity (centimeter-level-long) under hybrid dual-wavelength pumping is experimentally demonstrated. By combini…
View article: Research Progress on Thermoelectric Properties of Doped SnSe Thin Films
Research Progress on Thermoelectric Properties of Doped SnSe Thin Films Open
With the continuous advancement of science and technology, SnSe thin films are widely used in various fields such as solar cells, energy harvesting, and flexible devices. The importance of SnSe thin films continues to be highlighted, from …
View article: Research Progress on Tunable External Cavity Semiconductor Lasers in Visible and Near-Infrared Wavebands
Research Progress on Tunable External Cavity Semiconductor Lasers in Visible and Near-Infrared Wavebands Open
The TECSL has attracted much attention due to its wide tuning range, narrow linewidth, high output power, and excellent SMSR. It holds irreplaceable value in optical communication, spectroscopy analysis, and biomedical applications. The de…
View article: An underwater target position estimation method based on the cross-correlation dictionary
An underwater target position estimation method based on the cross-correlation dictionary Open
For underwater active detection, the relative position relationship between a target and a sonar system is very important for identifying and tracking the target. It is difficult for the existing underwater target position estimation metho…
View article: Generation of a single-frequency 509 nm laser with over 80% efficiency and 7 W power using an optimized external ring cavity
Generation of a single-frequency 509 nm laser with over 80% efficiency and 7 W power using an optimized external ring cavity Open
An improved computational method is proposed to optimize the transmission of the input-coupling mirror in an external ring cavity incorporating a MgO-doped periodically-poled stoichiometric LiTaO 3 (MgO:PPSLT) crystal, thereby enhancing th…
View article: Single-polarization single-frequency Yb<sup>3+</sup>-doped fiber laser at 1156 nm via dynamic Bragg grating mode selection
Single-polarization single-frequency Yb<sup>3+</sup>-doped fiber laser at 1156 nm via dynamic Bragg grating mode selection Open
We demonstrate a single-polarization single-frequency Yb 3+ -doped fiber laser operating at 1156 nm using a 10-m-long unpumped Yb 3+ -doped fiber (YDF) as a dynamic saturable absorber (SA). Leveraging spatial hole-burning-induced refractiv…
View article: Pancreatic adenocarcinoma with distant soft tissue metastases: a case report and literature review
Pancreatic adenocarcinoma with distant soft tissue metastases: a case report and literature review Open
Background Pancreatic cancer is a common malignant tumor that is highly aggressive and can develop distant metastases at an early stage. Pancreatic cancer metastasis often occurs in localized lymph nodes, peritoneum, lungs, and liver. The …
View article: An efficient long-wavelength single-frequency DBR Tm<sup>3+</sup>-doped fiber laser at 2.1 μm based on 1610 nm in-band pumping
An efficient long-wavelength single-frequency DBR Tm<sup>3+</sup>-doped fiber laser at 2.1 μm based on 1610 nm in-band pumping Open
Based on a 2.0 cm long Tm 3+ -doped fiber (TDF) and in-band pumped configuration, an efficient long-wavelength single-frequency distributed Bragg reflector (DBR) fiber laser at 2097 nm is demonstrated experimentally. With delicate optimiza…
View article: Nitrogen-Doped Carbon Encapsulated Navpo4f as a Promising Ultra-Long Stability Cathode for Sodium Ion Batteries
Nitrogen-Doped Carbon Encapsulated Navpo4f as a Promising Ultra-Long Stability Cathode for Sodium Ion Batteries Open
View article: AWGR-based all-optical switching network for distributed machine learning
AWGR-based all-optical switching network for distributed machine learning Open
With the increase sizes of training datasets and models, the bottleneck in distributed machine learning (DML) training has shifted from computation to communication. To address this bottleneck, we propose an all-optical switching network a…
View article: Juvenile Xanthogranuloma Involving the Left Femur: A Case Report and Literature Review
Juvenile Xanthogranuloma Involving the Left Femur: A Case Report and Literature Review Open
Surgery can be an effective treatment for juvenile xanthogranuloma involving the femur.
View article: 10 W super-wideband ultra-low-intensity-noise single-frequency fiber laser at 1 µm
10 W super-wideband ultra-low-intensity-noise single-frequency fiber laser at 1 µm Open
A 10 W super-wideband ultra-low-intensity-noise single-frequency fiber laser (SFFL) at 1 µm is experimentally demonstrated, based on dual gain saturation effects from semiconductors and optical fibers, together with an analog-digital hybri…
View article: Expanding gain bandwidth using ion-hybridized fiber for kHz-linewidth single-frequency fiber lasers at S-, C-, and L-bands: design and performance evaluation
Expanding gain bandwidth using ion-hybridized fiber for kHz-linewidth single-frequency fiber lasers at S-, C-, and L-bands: design and performance evaluation Open
Single-frequency fiber lasers at S-, C-, and L-bands play a crucial role in various applications such as optical network expansion, high-precision metrology, coherent lidar, and atomic physics. However, compared to the C-band, the S- and L…
View article: Constructing Multilayered Alternating Cations Intercalation Hybrid Perovskites with Short Interlayer Distance Using Aromatic Cations as Spacers
Constructing Multilayered Alternating Cations Intercalation Hybrid Perovskites with Short Interlayer Distance Using Aromatic Cations as Spacers Open
View article: CSD 2293547: Experimental Crystal Structure Determination
CSD 2293547: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Wideband ultra-low intensity noise reduction via joint action of gain saturation and out-of-phase polarization mixing effect from a semiconductor optical amplifier
Wideband ultra-low intensity noise reduction via joint action of gain saturation and out-of-phase polarization mixing effect from a semiconductor optical amplifier Open
In this article, the vector dynamics of semiconductor optical amplifiers (SOAs) are systematically analyzed and developed to explore its mechanism of intensity noise suppression. First, theoretical investigation on the gain saturation effe…
View article: Differential Brain Expression Patterns of microRNAs Related to Olfactory Performance in Honey Bees (Apis mellifera)
Differential Brain Expression Patterns of microRNAs Related to Olfactory Performance in Honey Bees (Apis mellifera) Open
MicroRNAs (miRNAs) play a vital role in the nerve regulation of honey bees (Apis mellifera). This study aims to investigate the differences in expression of miRNAs in a honey bee’s brain for olfactory learning tasks and to explore their po…
View article: Astaxanthin Promotes the Survival of Adipose-Derived Stem Cells by Alleviating Oxidative Stress via Activating the Nrf2 Signaling Pathway
Astaxanthin Promotes the Survival of Adipose-Derived Stem Cells by Alleviating Oxidative Stress via Activating the Nrf2 Signaling Pathway Open
The survival of free fat grafts is dependent primarily on adipose-derived stem cells (ADSCs); however, ADSCs are susceptible to oxidative stress in the recipient area. Astaxanthin (Axt) is a natural xanthophyll carotenoid with potent antio…
View article: Simultaneous achievement of power boost and low-frequency intensity noise suppression in a bidirectional pumping fiber amplifier based on saturated even-distribution gain
Simultaneous achievement of power boost and low-frequency intensity noise suppression in a bidirectional pumping fiber amplifier based on saturated even-distribution gain Open
An optimized bidirectional pumping fiber amplifier is demonstrated to achieve low-frequency intensity noise suppression and effective power enhancement simultaneously. Based on the concept analysis of the gain saturation effect, the influe…
View article: SurvivalPath:A R package for conducting personalized survival path mapping based on time-series survival data
SurvivalPath:A R package for conducting personalized survival path mapping based on time-series survival data Open
Summary The survival path mapping approach has been proposed for dynamic prognostication of cancer patients using time-series survival data. The SurvivalPath R package was developed to facilitate building personalized survival path models.…
View article: Efficient and Fast Contention Resolution for Awgr Based Optical Data Center Networks
Efficient and Fast Contention Resolution for Awgr Based Optical Data Center Networks Open
View article: New dual-function in situ bone repair scaffolds promote osteogenesis and reduce infection
New dual-function in situ bone repair scaffolds promote osteogenesis and reduce infection Open
View article: Pulse compression of a single-frequency Q-switched fiber laser based on the cascaded four-wave mixing effect
Pulse compression of a single-frequency Q-switched fiber laser based on the cascaded four-wave mixing effect Open
A pulse compressing technology of single-frequency Q-switched laser based on the cascaded four-wave mixing (CFWM) effect is demonstrated theoretically and experimentally, for the first time to the best of our knowledge. A theoretical model…
View article: Research on sonar image few-shot classification based on deep learning
Research on sonar image few-shot classification based on deep learning Open
The underwater environment is complex and diverse, which makes it difficult to evolve traditional methods such as manually extracting features from blurred images. What's more, sonar images are so hard to be obtained that their number is f…
View article: 650 W All-Fiber Single-Frequency Polarization-Maintaining Fiber Amplifier Based on Hybrid Wavelength Pumping and Tapered Yb-Doped Fibers
650 W All-Fiber Single-Frequency Polarization-Maintaining Fiber Amplifier Based on Hybrid Wavelength Pumping and Tapered Yb-Doped Fibers Open
Based on hybrid wavelength pumping and tapered Yb-doped fibers (T-YDFs), a 650 W all-fiber single-frequency polarization-maintaining fiber amplifier was demonstrated experimentally at 1030 nm. Different pump power ratios in the T-YDF-based…
View article: New dual-function in situ bone repair scaffolds promote osteogenesis and reduce infection
New dual-function in situ bone repair scaffolds promote osteogenesis and reduce infection Open
Background The treatment of infectious bone defects is a difficult problem to be solved in the clinic. In situ bone defect repair scaffolds with anti-infection and osteogenic abilities can effectively deal with infectious bone defects. In …
View article: A 102 W High-Power Linearly-Polarized All-Fiber Single-Frequency Laser at 1560 nm
A 102 W High-Power Linearly-Polarized All-Fiber Single-Frequency Laser at 1560 nm Open
A 1560 nm high-power linearly-polarized all-fiber single-frequency narrow-linewidth laser with near diffraction-limited beam quality is demonstrated. The Yb–Er energy transfer efficiency and the ability of the signal laser to capture pump …
View article: Continuously spacing-tunable multi-wavelength single-frequency fiber laser based on cascaded four-wave mixing at 1.06 μm
Continuously spacing-tunable multi-wavelength single-frequency fiber laser based on cascaded four-wave mixing at 1.06 μm Open
A continuously spacing-tunable multi-wavelength single-frequency fiber laser (MW-SFFL) at 1.06 μ m is investigated based on cascaded four-wave mixing (CFWM) in a high-nonlinearity photonic crystal fiber (HN-PCF). By using two separate wave…
View article: Bionic target localization method based on range-azimuth joint dictionary
Bionic target localization method based on range-azimuth joint dictionary Open
The traditional underwater sonar system usually achieve high angle resolution by increasing array aperture and the number of array elements, but this method will inevitably lead to complex system and high cost. Given that big brown bats ha…
View article: PAX8-AS1 knockdown facilitates cell growth and inactivates autophagy in osteoblasts via the miR-1252-5p/GNB1 axis in osteoporosis
PAX8-AS1 knockdown facilitates cell growth and inactivates autophagy in osteoblasts via the miR-1252-5p/GNB1 axis in osteoporosis Open
Osteoporosis (OP) is the most common systematic bone disorder among elderly individuals worldwide. Long noncoding RNAs (lncRNAs) are involved in biological processes in various human diseases. It has been previously revealed that PAX8 anti…