external-cavity surface-emitting laser
Femtosecond synchronously in-well pumped vertical-external-cavity surface-emitting laser
... Vertical-external-cavity surface-emitting lasers (VECSELs) have been demonstrated to produce high continuous wave (CW) average output powers with excellent beam quality ...The external ...
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Operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser
... Ti:sapphire laser was again used as the pump source. The laser beam was focused onto the sample to give a spot size of roughly 500 m in ...front surface of the ...the cavity axis can be ...
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Quantum modeling of semiconductor gain materials and vertical-external-cavity surface-emitting laser systems
... Corresponding to the emission intensity, the carrier temperatures and the steady-state carrier density show a strong wavelength dependence, as shown in Fig. 20 (b). The carrier temperatures are defined as the ...
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Femtosecond synchronously mode-locked vertical-external cavity surface-emitting laser
... The appearance of multiple pulses can be explained by the rather long time it takes to build up the gain after the pump pulse because the carriers need to relax into the quantum wells. Hence, the effective pumping time ...
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Vector cavity solitons in broad area Vertical-Cavity Surface-Emitting lasers
... an external cavity diode laser in Littrow configuration (Sacher Lasertechnik TEC100-960-60), isolated from the rest of the setup by an optical ...
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Circular polarization switching and bistability in an optically injected 1300 nm spin-vertical cavity surface emitting laser
... In summary, this contribution reports the experimental observation of optical power circular polarization switching (PS) and polarization bistability (PB) in a 1300 nm spin-VCSEL subject to circularly polarized ...
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Spatially Resolved Absorption Spectroscopy on a Microhollow Cathode Helium Plasma Using a Vertical-Cavity Surface-Emitting Laser
... the laser diode was set at ...the laser light fre- quency, we modulated the diode current by the voltage ap- plied to the external input of a current controller (Thorlabs, LDC202C) from a function ...
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Characterization of Vertical Cavity Surface Emitting Lasers With Electrical and Optical Derivative Spectroscopy
... The laser cavity was formed by cleaved or polished semiconductor surfaces providing the optical feedback, and the p-n junction was forward biased for external ...edge emitting stripe geometry ...
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Temperature dependence of spontaneous switch-on and switch-off of laser cavity solitons in vertical-cavity surface-emitting lasers with frequency-selective feedback
... localized structures that appear in traps in VCSELs with frequency-selective feedback. The investigations clear show that the decisive effect of the device temperature is to control the detuning between VCSEL and VBG ...
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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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Multimode, Aperiodic Terahertz Surface-Emitting Laser Resonators
... as laser resonators, they open up intriguing design possibilities that are simply not possible in conventional periodic photonic crystals: the distinction between symmetric (vertically radiative but low quality ...
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Optical devices using an external cavity semiconductor laser
... diode laser having opposed first and second facets is utilized as an optical ...reflective surface is positioned a predetermined distance from one of the first and second facets in order that a resonant ...
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Vertical cavity surface emitting lasers: Design, characterisation and integration
... Specifically the use of optimised DBRs coupled to a graded index separate confinement heterostructure (GRINSCH) cavity is shown to improve the high power characteris[r] ...
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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 narrow optical ...
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Numerical Analysis of the Effect of Temperature and External Optical Feedback Variation on the Output Characteristics of External Cavity Semiconductor Laser Based Fiber Bragg Gratings
... and external OFB on output characteristics of ECSL-FBGs laser model is successfully ...ECSL-FBGs laser model is extremely sensitive to the external OFB ...of laser characteristics is ...
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Wind-Induced Pressures in Air Permeable, Double-Layer Roof Systems in Regions of Separated Flow
... measured external and cavity pressure coefficients, the cavity pressure coefficients on each panel tend to follow the local external pressure fluctuations on that panel although the ...
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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 ...
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Polarization switches in vertical cavity surface emitting lasers
... Among the many benefits of VCSEL compared to over edge-emitting diodes, VCSELs are cheaper to man- ufacture in quantity, they are easier to test, and they are more efficient. Moreover, the VCSELs require less ...
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Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices
... polarized laser mode will be ...the cavity couples the circular polarization components with different helicity and leads hence to an oscillation between ...
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Design of a LW-VCSEL Optical Source
... [13]Arnob Islam, SamihaIshrat Islam, Saiful Islam, “Designing an all epitaxial 1,550 nm intra-cavity VCSEL using GaInAsN/AlGaInAs in the active region and AlGaAsSb/AlAsSb in top and bottom DBRs”, Optical and ...
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