Laser pumping
View article: Unlocking megawatt-peak-power laser emission with colloidal quantum dots
Unlocking megawatt-peak-power laser emission with colloidal quantum dots Open
Output power of a laser device critically defines the application prospects. Colloidal quantum dots (QDs) have emerged as auspicious laser media; however, the exclusively low-power emission obscures the practical deployment. Here, we resol…
View article: Watt-level polarization-maintaining Er
Watt-level polarization-maintaining Er Open
We demonstrate a linearly polarized Er3+: ZBLAN fiber laser in the dual wavelength pumping scheme for laser emission in the 3400–3700 nm spectral band. The laser is based on a polarization-maintaining heavily erbium-doped ZBLAN fiber duall…
View article: Photonic electrometry using a piezoelectric-Pockels microresonator
Photonic electrometry using a piezoelectric-Pockels microresonator Open
Facilitated by low-noise laser frequency locking, optical microresonators with the Pockels effect have shown unprecedented high resolutions in sensing electrical field. However, the requirement for tunable and low-noise laser sources consi…
View article: Nanoprinting withCrystal Engineering for PerovskiteLasers
Nanoprinting withCrystal Engineering for PerovskiteLasers Open
Metal halide perovskites are promising laser light sources due to their exceptional optical gain and solution processability. Structuring the cavity that determines lasing mode and performance, however, is mostly limited to chemical synthe…
View article: Micro-pulling-down grown Tm,Ho:GSAG crystal as laser gain medium
Micro-pulling-down grown Tm,Ho:GSAG crystal as laser gain medium Open
We report on the spectroscopic and laser properties of a Tm,Ho:GSAG (gadolinium scandium aluminium garnet) crystal which was grown by the micro-pulling-down (µ-PD) method. The crystal, doped with 4 at.% of Tm 3+ and 0.75 at.% of Ho 3+ , wa…
View article: Simultaneous generation of Raman-assisted Soliton Microcombs and Tunable Multi-chromatic Raman Microlasers in Single Monolithic Thin-film Lithium Niobate Microrings
Simultaneous generation of Raman-assisted Soliton Microcombs and Tunable Multi-chromatic Raman Microlasers in Single Monolithic Thin-film Lithium Niobate Microrings Open
High-performance integrated broadband coherent light sources are essential for advanced applications in high-bandwidth data processing and chip-scale metrology, yet remain challenging. In this study, we demonstrate a monolithic Z-cut lithi…
View article: A Review on the Laser Diode
A Review on the Laser Diode Open
Similar to a light-emitting diode, a laser diode (LD), sometimes injection laser diode, ILD, semiconductor laser, or diode laser is a semiconductor device that can produce lasing conditions at its junction when a diode is directly pumped w…
View article: An Overview on the Erbium Doped Glass Lasers
An Overview on the Erbium Doped Glass Lasers Open
Erbium-doped glass serves as the active laser medium in an Er:glass laser, which is a solid-state laser. In order to increase the effectiveness of these lasers, ytterbium (Yb) is occasionally added. The infrared portion of the electromagne…
View article: Study on Optimum Parameters of 46.9nm and 69.8nm Dual-wavelength Laser with Ne-like Ar ions
Study on Optimum Parameters of 46.9nm and 69.8nm Dual-wavelength Laser with Ne-like Ar ions Open
Dual-wavelength lasers in the EUV (extreme ultraviolet) band can be applied in many fields such as high-resolution imaging, EUV nonlinear optics, and high-density plasma diagnostics. In this paper, the 46.9 nm and 69.8 nm dual-wavelength l…
View article: Four-Sided Symmetrical Transversely Pumped Model for Diode-Pumped Rare Gas Lasers
Four-Sided Symmetrical Transversely Pumped Model for Diode-Pumped Rare Gas Lasers Open
Diode-pumped rare gas lasers (DPRGLs) have attracted significant attention as potential high-power laser sources. This paper proposes a four-sided transverse pumping scheme to address the energy concentration degree limitations in existing…
View article: Bidirectional Wavelength Tuning in an Optofluidic Fiber Microcavity Laser Directed by Rhodamine 6G and Co-Dopants
Bidirectional Wavelength Tuning in an Optofluidic Fiber Microcavity Laser Directed by Rhodamine 6G and Co-Dopants Open
Achieving controllable wavelength tuning in optofluidic whispering gallery mode microcavity lasers is crucial for high-throughput, multi-sample, multiplexed biochemical sensing and multifunctional integrated photonic devices. This paper de…
View article: Gain superposition and thermal management optimization in high pump power lasers using tandem Nd:MgO:LiNbO3 crystals
Gain superposition and thermal management optimization in high pump power lasers using tandem Nd:MgO:LiNbO3 crystals Open
View article: In-situ observation of melting behavior depending on laser power during laser powder bed fusion using X-ray images
In-situ observation of melting behavior depending on laser power during laser powder bed fusion using X-ray images Open
This study aimed to clarify the shape of the droplet and depression zone of pure titanium under overhang conditions during Laser Powder Bed Fusion through in-situ observations using X-ray imaging. To simulate the fabrication of an overhang…
View article: A fiber-delivered, multi-line nanosecond source for single-shot spectro-polarimetric scattering measurements
A fiber-delivered, multi-line nanosecond source for single-shot spectro-polarimetric scattering measurements Open
We here describe a nanosecond, multi-line laser source that preserves partial linear polarization after transmission through a 100-m large-core graded-index (GRIN) fiber. The system generates narrow emission lines between 473 and 600 nm, e…
View article: Overlapping integrals between the pump and laser beams versus the waist location of the pump beam for different absorbed pump power.
Overlapping integrals between the pump and laser beams versus the waist location of the pump beam for different absorbed pump power. Open
Overlapping integrals between the pump and laser beams versus the waist location of the pump beam for different absorbed pump power.
View article: Mode overlapping efficiencies between the pump and laser beams versus the waist location of the pump beam at the absorbed pump power of 16.94 W.
Mode overlapping efficiencies between the pump and laser beams versus the waist location of the pump beam at the absorbed pump power of 16.94 W. Open
Mode overlapping efficiencies between the pump and laser beams versus the waist location of the pump beam at the absorbed pump power of 16.94 W.
View article: Diode-pumped wavelength-switchable quasi-three-level Nd:LiLuF4 laser on the 4F3/2→4I9/2 transition
Diode-pumped wavelength-switchable quasi-three-level Nd:LiLuF4 laser on the 4F3/2→4I9/2 transition Open
We first demonstrate a continuous-wave (CW) wavelength-switchable quasi-three-level Nd:LiLuF 4 laser operating at 4 F 3/2 → 4 I 9/2 transition. By shifting the pump beam waist location in the Nd:LLF, switching between single-wavelength (SW…
View article: Efficient continuous wave ultraviolet Pr3+:YLF laser at 249.6 nm
Efficient continuous wave ultraviolet Pr3+:YLF laser at 249.6 nm Open
Pr 3+ :YLF continuous wave(CW)cyan laser from 3 P 0 to 3 H 4 transition is first demonstrated at 499.2 nm. The 249.6 nm deep ultraviolet laser (DUV) is obtained with the method of effi…
View article: Watt-Level Tunable Mid-Infrared Laser Emission at 2.8 μm Generated by Stimulated Raman Scattering of Methane Molecules in Hollow-Core Fibers
Watt-Level Tunable Mid-Infrared Laser Emission at 2.8 μm Generated by Stimulated Raman Scattering of Methane Molecules in Hollow-Core Fibers Open
Fiber lasers operating at 2.8 μm have important applications in fields such as polymer material processing and medical surgery. Fiber gas lasers (FGLs) based on stimulated Raman scattering (SRS) in hollow-core fibers (HCFs) provide a super…
View article: Response Characteristics of Yb-doped Fiber Lasers to Gamma-ray Radiation
Response Characteristics of Yb-doped Fiber Lasers to Gamma-ray Radiation Open
Exploited in radiation environments, including space, nuclear reactors and large accelerators, fibers would experience significant parameter change induced by the interaction with radiation, including radiation induced attenuation, radiati…
View article: Single aperiodically poled lithium niobate chip for simultaneous electro-optic spectral and Q switchings in a cross-polarized, closely-lying dual-wavelength Nd:YLF laser
Single aperiodically poled lithium niobate chip for simultaneous electro-optic spectral and Q switchings in a cross-polarized, closely-lying dual-wavelength Nd:YLF laser Open
We report on a fast switchable light source in a Nd:YLF laser oscillating at two cross-polarized, closely lying emission lines ( π -polarized 1047-nm and σ -polarized 1053-nm lines), achieved using an intracavity aperiodically poled lithiu…
View article: Analysis of Thermal Effects in Yb:YAG Laser Amplifiers with Active-Mirror Structure
Analysis of Thermal Effects in Yb:YAG Laser Amplifiers with Active-Mirror Structure Open
To address the challenge of laser beam distortion induced by thermal effects in high-power slab laser amplifiers, a coupled thermal–mechanical–optical model for a face-pumped Yb:YAG multi-pass amplifier was developed. The thermal effects u…
View article: Highly efficient DUV generation at 100 kHz via Yb pumped four-wave mixing in stretched hollow-core fibers
Highly efficient DUV generation at 100 kHz via Yb pumped four-wave mixing in stretched hollow-core fibers Open
We report the generation of the fifth harmonic of Yb at 206 nm with pulse energies exceeding 16 $μ$J and durations of approximately 100 fs at a repetition rate of 100 kHz. The deep ultraviolet pulses are produced using four-wave difference…
View article: Watt-level polarization-maintaining Er3+: ZBLAN fiber laser tunable from 3.4 µm to 3.7 µm
Watt-level polarization-maintaining Er3+: ZBLAN fiber laser tunable from 3.4 µm to 3.7 µm Open
We demonstrate a linearly polarized Er3+: ZBLAN fiber laser in the dual wavelength pumping scheme for laser emission in the 3.4-3.7 µm spectral band. The laser is based on a polarization-maintaining heavily erbium-doped ZBLAN fiber dually …
View article: Full Bandwidth Time-Domain Intensity Statistical Characteristics of Raman Random Fiber Laser Based on a Temporal Dynamics Controllable Pump
Full Bandwidth Time-Domain Intensity Statistical Characteristics of Raman Random Fiber Laser Based on a Temporal Dynamics Controllable Pump Open
The temporal dynamics and statistical characteristics of Raman random fiber lasers are of great significance for studying their physical properties and applications. In this paper, the effect of pump dynamics on the temporal intensity stat…
View article: Dual-Wavelength Cascade Pumping for Low-Threshold and High-Efficiency 4.4 μm Emission in Dy3+:InF3 Fiber Laser: A Numerical Investigation
Dual-Wavelength Cascade Pumping for Low-Threshold and High-Efficiency 4.4 μm Emission in Dy3+:InF3 Fiber Laser: A Numerical Investigation Open
Dy3+:InF3 fiber shows promise for 4.4 μm mid-infrared lasing, but the much shorter lifetime of its upper laser level compared to the lower level causes inevitable self-termination. While cascade 4.4 μm/3 μm lasing has been proposed as a po…
View article: Femtosecond coherence dynamics of exciton polaritons
Femtosecond coherence dynamics of exciton polaritons Open
Exciton-polariton performs as an ideal carrier of macroscopic quantum coherence, which can be potentially manipulated through precisely shaping the driving laser field. However, the connection of the coherence properties between the pumpin…
View article: Resonantly Pumped Tunable Tm,X:CaF2 Lasers: Effect of Buffer Ions (X = Y, La, Gd, and Lu)
Resonantly Pumped Tunable Tm,X:CaF2 Lasers: Effect of Buffer Ions (X = Y, La, Gd, and Lu) Open
We report on the eye-safe laser performance of Tm3+-doped calcium fluoride crystals, modified with optically inactive "buffer" cations (Y3+, Lu3+, Gd3+, and La3+), under in-band diode-pumping at 1.68 um. In the free-running regime, the 1.5…
View article: Resonantly Pumped Tunable Tm,X:CaF2 Lasers: Effect of Buffer Ions (X = Y, La, Gd, and Lu)
Resonantly Pumped Tunable Tm,X:CaF2 Lasers: Effect of Buffer Ions (X = Y, La, Gd, and Lu) Open
We report on the eye-safe laser performance of Tm3+-doped calcium fluoride crystals, modified with optically inactive "buffer" cations (Y3+, Lu3+, Gd3+, and La3+), under in-band diode-pumping at 1.68 um. In the free-running regime, the 1.5…
View article: Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas
Kinetic study of terahertz generation based on the interaction of two-color ultra-short laser pulses with molecular hydrogen gas Open
In this work, using a two dimensional particle in cell-Monte Carlo collision simulation scheme, interaction of two-color ultra-short laser pulses with the molecular hydrogen gas (H2) is examined. The operational laser parameters, i.e., its…