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Showing 1 to 11 of 11 for “"VECSEL"”.
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An overview of laser operation and modelocking of a vertical external cavity surface emitting laser (VECSEL)
VECSEL laser systems are important additions to the family of lasers. They exhibit a combination of desirable lasing features that are usually not simultaneously attainable. These features are high power, diffraction limited beam quality, intra-cavity frequency doubling, tunability, and ultrashort …
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Semiconductor seeded fibre amplified sources of ultra short pulses
… surface-emitting semiconductor lasers (VECSEL). Mode-locked VECSELs are a compact source of ultra-short pulses at GHz repetition rates, with pulse lengths as short as 190 fs being generated directly from the laser. The VECSEL is a power scalable device offering spectral versatility …
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Design and fabrication of vertical external cavity surface-emitting lasers
… vertical external cavity surface-emitting laser (VECSEL). A VECSEL utilizes a free space cavity along with larger transverse cavity dimensions, to extract higher output power. To aid the design of the VECSEL, the thesis begins with fabrication and experimental characterization of vertical-cavity …
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Broadly tuneable crystalline Raman lasers
… vertical external cavity surface emitting laser (VECSEL), also known as a semiconductor disk laser (SDL). The VECSEL-pumped Raman laser achieved Watt-level output and broad tuneability within the water transmission window at 1.7 µm, offering potential applications in remote sensing and medical …
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Nonlinear Dynamics of solitary and optically-injected spin vertical-cavity lasers
… Surface-Emitting Laser (Spin-VECSEL). This is also accompanied by an investigation of the dynamics of the solitary 1300 nm QD spin-VECSEL. Finally, we present the first experimental study of the evolution of the output polarisation ellipticity and nonlinear dynamics of the 1300 …
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Mode-locked surface emitting semiconductor lasers
… External Cavity Surface Emitting Lasers (OP-VECSELs) arc novel semiconductor-based lasers that have many advantages over other lasers in terms of the power scalability, good beam quality, compactness and low cost they can offer. They can be passively mode-locked with a Semiconductor Saturable …
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Design, growth and optimization of 2-μm InGaSb/AlGaSb quantum well based VECSELs on GaAs/AlGaAs DBRs.
… external cavity surface emitting lasers (VECSELs) operating in the 1.8 to 2.8 μm wavelength range are typically based on InGaSb/AlGaSb quantum wells on AlAsSb/GaSb distributed Bragg reflectors (DBRs), grown latticematched on GaSb substrates. In this work the ability to grow such antimonide …
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Femtosecond pulse generation in surface-emitting semiconductor lasers
… external-cavity surface-emitting lasers (VECSELs). Continuous wave VECSELs were first designed as a type of semiconductor laser capable of producing high output power in near transform-limited beams. Optical pumping allows the output power of the device to be increased simply by increasing …
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Compact Femtosecond Lasers for Multiphoton Imaging
… External Cavity Surface Emitting Lasers (VECSELs), also called Semiconductor Disc Lasers (SDL) are nowadays capable of producing sub-100-fs pulses, multi-kW peak powers, and mode-locking has been demonstrated for wavelength range from 675nm to >2 microns. These flexible, low cost lasers …
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Micro-scale processing of diamond structures and devices
… diamond micro-optics, such as micro-lensed micro-VECSEL photonic devices were also demonstrated. Utilising ICP Ar/Ch plasma etching and other processes, prototype diamond electronic devices such as diamond MISFETs and MOSFETs have been fabricated. To realize such diamond FET devices, ohmic …
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Quantum dot based semiconductor disk lasers
… external cavity surface emitting lasers (VECSELs), which are also known as optically pumped semiconductor lasers (OPSLs) or semiconductor disk lasers (SDLs) realized an important feature in semiconductor based lasers – high multi- Watt output power was combined with diffraction limited …