High-beam-quality photonic-crystal lasers
WebWe demonstrate high-power continuous-wave (CW) lasing oscillation of 1.3-µm wavelength InP-based photonic-crystal surface-emitting lasers (PCSELs). Single-mode operation with an output power of over 100 mW, a side-mode suppression ratio (SMSR) of over 50 dB, and a narrow single-lobe beam with a divergence angle of below 1.2° are … Web22 de nov. de 2024 · Epitaxially regrown electrically pumped photonic crystal surface emitting lasers (PCSELs) operating near 2 µm were designed and fabricated within a III-V-Sb material system. A high-index-contrast photonic crystal layer was incorporated into the laser heterostructures by air-pocket-retaining epitaxial regrowth. Transmission electron …
High-beam-quality photonic-crystal lasers
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Web14 de abr. de 2024 · A randomly rotated glass slice is inserted before each source to randomise the phase of the laser pulse before hitting on the sandwich crystal. PBS … WebRecent progress in photonic crystal lasers is described. 10W-class high-power and high-beam quality (M2~2) operation is successfully demonstrated using InGaAs/GaAs …
WebPhotonic-crystal surface-emitting lasers (PCSELs) with modulated photonic crystals have attracted much attention for their unrivaled capabilities, such as broad area coherent … WebIn this study, GaN-based photonic quasi-crystal surface emitting lasers (PQCSELs) operated at different Γ band-edge modes were fabricated and investigated. The photonic quasi-crystal patterns were defined by utilizing electron-beam lithography and inductively coupled plasma etching. Distinctive higher order Γ band-edge lasing modes were …
Web26 de fev. de 2024 · Photonic crystal fiber (PCF) technology has radically impacted the scientific and industrial ultrafast laser market. Reducing platform dimensions are important to decrease cost and footprint while maintaining high optical efficiency. We present our recent work on short 85 μm core ROD-type fiber amplifiers that maintain single-mode … Web1 de nov. de 2024 · Semantic Scholar extracted view of "Semiconductor photonic crystal laser" by Wanhua Zheng. Skip to search form Skip to main content Skip to account ... An improvement of the linearity of the light-current characteristics and the beam quality of high-power /spl alpha/-distributed feedback lasers is achieved by an ion implantation of ...
Web13 de abr. de 2024 · Fabrication and characterization of tapered photonic crystal fiber for ... While they exhibit a very good efficiency and exceptionally high damage threshold … can pharmacies issue antibioticsWebThe fiber design has outer dimensions of a rod laser, meaning a diameter in the range of a few millimeters and a length of just a few tens of centimeters, and includes two important waveguide structures, one for pump radiation and one for laser radiation. We obtained 120-W output power in single-mode beam quality from a 48-cm-long fiber cane ... can pharamgitis swell the neckWeb24 de jun. de 2024 · A photonic crystal fiber-based chirped pulse amplification delivering 272 fs pulses of 66.4 µJ energy at a repetition rate of 500 kHz is presented, resulting in an average/peak power of 33.2 W/244 MW. A single grating is adopted for the pulse width stretching and compression, which leads to high-compactness and low cost of the … flame safe fire poly fpccWeb13 de abr. de 2014 · Nature Photonics - Researchers demonstrate a watt-class high-power, single-mode photonic-crystal laser operating continuously at room temperature. A … can pharmacists give b12 injections ukWebWe have improved the beam quality of semiconductor lasers at high power through ion implantation and photonic crystal structure. The lasers achieved 10.2W at 11A and the … can pharmacists give antibioticsWeb13 de abr. de 2024 · Fabrication and characterization of tapered photonic crystal fiber for ... While they exhibit a very good efficiency and exceptionally high damage threshold and/or low thermal loads at high repetition rate, crystal-based OP(CP)A generally suffers from rather poor beam quality. Thus, more recently, fibered OPCPA (f-OPCPA ... can pharmacists give medical certificatesWeb3 de dez. de 2024 · In this paper we propose a gold-plated photonic crystal fiber (PCF) refractive index sensor based on surface plasmon resonance (SPR), in which gold is … can pharmacists give injections in pa