surface-emitting semiconductor lasers
Dynamic modelling of electrooptically modulated vertical compound cavity surface emitting semiconductor lasers
... shallow surface etching of the top mirror reflectivity can also improve the direct modu- lation (Westbergh et al 2010, ...Advanced semiconductor lasers involving direct modulation of the photon ...
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Characterization of Vertical Cavity Surface Emitting Lasers With Electrical and Optical Derivative Spectroscopy
... a semiconductor p-n junction in 1962 16 ...polished semiconductor surfaces providing the optical feedback, and the p-n junction was forward biased for external ...edge emitting stripe geometry laser ...
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Polarization switches in vertical cavity surface emitting lasers
... Cavity Surface Emitting Lasers (VCSEL) are a novel class of semiconductor lasers which are having great success in many applications requiring high speed, precision and ...
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An electrically pumped surface-emitting semiconductor green laser
... Vertical-cavity surface-emitting laser (VCSEL) diodes, first presented in 1979 (1), emit a coherent optical beam vertically from the device top surface and offer a number of advantages compared to ...
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Vertical-Cavity Surface-Emitting Lasers for Ultra-High Speed Photonics
... VCSELs have small size, are low cost, have high‐speed operation, have low power consumption, and can be fabricated into arrays [1,2]. These advantages cause VCSELs to attract much attention for use in photonics, e.g. ...
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Electronic control of coherence in a two-dimensional array of photonic crystal surface emitting lasers
... coherent semiconductor laser arrays should be possible utilising PCSEL technology with the added advantage that they emit a coherent beam that can be focused down to the diffraction ...
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High frequency continuous birefringence-induced oscillations in spin-polarized vertical-cavity surface-emitting lasers
... traditional semiconductor lasers and with high potential for applications as ultrafast sources in high-speed optical communication and spectroscopy ...
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Photonic crystal Bragg lasers : design, fabrication, and characterization
... in lasers dates back to 1973 ...structures: surface emitting [65–68] and edge emitting [18, 27, ...For surface emitting lasers, light has to satisfy the Bragg conditions ...
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Microresonators for organic semiconductor and fluidic lasers
... compact, surface-emitting polymer ...DFB lasers, the presence of the defect resulted in a higher net-gain and lower oscillation ...polymer lasers were ...pump lasers to more compact and ...
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Vertically emitting indium phosphide nanowire lasers
... faster lasers, critically important aspects for optical data transmission, sensing and imaging applications ...from semiconductor NWs, these have usually been transferred from their growth substrate onto ...
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Polarization dynamics in vertical-cavity surface emitting lasers
... in semiconductor lasers phase-amplitude coupling is particularly strong and, in addition, exists even for operation at the gain peak [25], the existence of these effects in VCSELs is not totally ...
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Phase-locked arrays of surface-emitting graded-photonic-heterostructure terahertz semiconductor lasers
... FDTD simulations (Figs. 2(b)-(d)) provide an insight into these phenomena. The simulations have been performed with the commercial code Lumerical. We investigate – when the total ring length changes by a value L – the ...
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Vertical external cavity semiconductor lasers
... Indeed, pulsed semiconductor lasers seldom use their broad intrinsic gain bandwidth to full advantage in the generation of short pulses. The mode-locked VECSELs described above typically exhibit rather ...
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Surface-emitting terahertz quantum cascade lasers with continuous-wave power in the tens of milliwatt range
... demonstrated surface-emitting THz QCLs based on graded photonic heterostructure (GPH) resonators (shown schematically in ...GPH lasers, therefore, exhibit stable single-mode emission with high power ...
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Studies on the Effective Physical Parameters for Chirp Reduction in Optical Injection Locked Semiconductor Lasers
... Injection locking of semiconductor lasers has been actively investigated recently. Theoretical calculations show that it is possible to increase laser bandwidth and to reduce noise and chirp with proper ...
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Fibre compatible modelocked lasers at 1 5μm
... the lasers incorporating the more heavily doped fibre are only -70% as efficient as those using the lower dopant ...fibre lasers is not compromised due to this ...
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Substrate emitting ring interband cascade lasers
... interband lasers, the intersubband selection rule restricts QCLs to favor TM polarized waveguide ...cascade lasers, owing to the char- acter of the optical ...
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laser4
... The semiconductor laser consists of a tiny block (about one square millimetre in area) of gallium arsenide (Fig). When the p- and n-type layers are formed in an intimate contact, the interface becomes a p-n ...
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laser3
... The semiconductor laser consists of a tiny block (about one square millimetre in area) of gallium arsenide (Fig). When the p- and n-type layers are formed in an intimate contact, the interface becomes a p-n ...
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Properties of Buried Heterostructure Single Quantum Well (Al,Ga)As Lasers
... Abstract Unlike conventional semiconductor lasers, single quantum well SQW lasers with high reflectivity end facet coatings have dramatically reduced threshold currents as a result of th[r] ...
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