Ruochen Yin
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View article: Endlessly single-mode, broadband polarization-maintaining solid-core photonic crystal fiber
Endlessly single-mode, broadband polarization-maintaining solid-core photonic crystal fiber Open
We present a polarization-maintaining photonic crystal fiber (PM-PCF), featuring a hybrid lattice structure that simultaneously achieves broadband single-mode guidance and enhanced birefringence through coordinated geometric and cross-opti…
View article: Flexible delivery of high-power picosecond laser in purely-single optical mode of anti-resonant hollow-core fiber for micromachining
Flexible delivery of high-power picosecond laser in purely-single optical mode of anti-resonant hollow-core fiber for micromachining Open
We present the flexible delivery of picosecond laser pulses with up to 20 W average power over a 3-m-long sample of anti-resonant hollow-core fiber (AR-HCF) for laser micromachining applications. Our experiments highlight the importance of…
View article: Flexible delivery of broadband, 100-fs mid-infrared pulses in the water-absorption band using hollow-core photonic crystal fibre
Flexible delivery of broadband, 100-fs mid-infrared pulses in the water-absorption band using hollow-core photonic crystal fibre Open
High quality free-space and over-fibre transmission of mid-IR light is limited by factors such as material-related absorption, diffraction, light leakage and nonlinearity. Conventional vacuum apparatus can be utilized for high-quality lase…
View article: High-quality delivery of high-power picosecond lasers in single-ring anti-resonant hollow-core fiber for micromachining
High-quality delivery of high-power picosecond lasers in single-ring anti-resonant hollow-core fiber for micromachining Open
We present the flexible delivery of picosecond laser pulses with up to 20 W average power over a 3-m-long sample of anti-resonant hollow-core fiber (AR-HCF) for laser-micromachining applications. Our experiments highlight the importance of…
View article: Ultraviolet-Enhanced Flat Supercontinuum Light Generated in Cascaded Photonic Crystal Fiber
Ultraviolet-Enhanced Flat Supercontinuum Light Generated in Cascaded Photonic Crystal Fiber Open
We demonstrate that by using a cascaded configuration of five solid-core photonic crystal fiber (PCF) samples with progressively decreasing core diameters, ultraviolet light with wavelengths as short as ∼300 nm can be generated in a superc…
View article: Line intensities of CO near 1560 nm measured with absorption and dispersion spectroscopy
Line intensities of CO near 1560 nm measured with absorption and dispersion spectroscopy Open
High-precision line intensities are of great value in various applications, such as greenhouse gas metrology, planetary atmospheric analysis, and trace gas detection. Here we report simultaneous measurements of cavity-enhanced absorption a…
View article: Kilohertz-Linewidth Brillouin Photonic Crystal Fiber Laser With Non-Resonance Pumping Configuration
Kilohertz-Linewidth Brillouin Photonic Crystal Fiber Laser With Non-Resonance Pumping Configuration Open
Brillouin fiber laser with the non-resonance pumping configuration, has compact set-up, good wavelength tunability and high-power single-frequency-emission capability, being regarded as an important technique for highly-coherent light gene…
View article: Ultrahigh Transverse Mode Purity by Enhanced Modal Filtering in Double‐Clad Single‐Ring Hollow‐Core Photonic Crystal Fiber
Ultrahigh Transverse Mode Purity by Enhanced Modal Filtering in Double‐Clad Single‐Ring Hollow‐Core Photonic Crystal Fiber Open
Maintaining high fundamental mode purity in low‐loss single‐ring hollow‐core photonic crystal fiber remains a key challenge. Here a double‐clad anti‐resonant‐reflecting design is reported that, through modal filtering, provides high suppre…
View article: Highly-stable, flexible delivery of microjoule-level ultrafast pulses in vacuumized anti-resonant hollow-core fibers for active synchronization
Highly-stable, flexible delivery of microjoule-level ultrafast pulses in vacuumized anti-resonant hollow-core fibers for active synchronization Open
We demonstrate the stable and flexible light delivery of multi-μJ, sub-200-fs pulses over a ~10-m-long vacuumized anti-resonant hollow-core fiber (AR-HCF), which was successfully used for high-performance pulse synchronization. Compared wi…