vertical-external-cavity surface-emitting lasers
Delay-differential-equation modeling of mode-locked vertical-external-cavity surface-emitting lasers in different cavity configurations
... Time-delayed model We consider last an alternative, and so far hypothetic, case of the central chip being the SESAM, with the gain chip and the mirror m terminating the cavity, which is [r] ...
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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 ...
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Femtosecond synchronously mode-locked vertical-external cavity surface-emitting laser
... pumped vertical-external cavity surface-emitting lasers (VECSEL) [1] combine the advantages of multiple quantum well semiconductor lasers with optical ...
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Bistability conditions between lasing and non-lasing states for vertical-cavity surface-emitting lasers with frequency-selective optical feedback
... are gain-guided devices with an aperture diameter of 15 µm from EMCORE Corp. (emission wavelength in the 850 nm region) operating in the fundamental transverse mode close to threshold (up to approx. 20% above threshold). ...
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Electrically-controlled neuron-like spiking regimes in vertical-cavity surface-emitting lasers at ultrafast rates
... Furthermore, the results in Figs. 3-8 reveal in all cases the generation of sub-ns long spikes (approx. 100 ps long) with inter-spiking intervals also below 1 ns, even if the stimuli are encoded in the electrical current ...
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Spontaneous formation of vector vortex beams in vertical-cavity surface-emitting lasers with feedback
... To summarize, playing with the anisotropies via pres- ence or absence of a beam sampler misaligned to the VC- SEL principal axis, different realizations of vector vortex beams can be accessed. The observations suggest ...
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Characterization of Vertical Cavity Surface Emitting Lasers With Electrical and Optical Derivative Spectroscopy
... 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 laser 16 ...
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Controlled propagation of spiking dynamics in vertical-cavity surface-emitting lasers : towards neuromorphic photonic networks
... experimentally the duration of the encoded perturbations, single or multiple spiking patterns can be generated from the first VCSEL-neuron in the system (T-VCSEL). The bottom plots (in red) in figs. 3(e-g) show in turn ...
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Analysis of spatial emission structures in vertical-cavity surface-emitting lasers with feedback from a volume Bragg grating
... for vertical-cavity surface-emitting lasers (VCSELs), both for medium-sized devices emitting Gaussian modes [4,5] and for broad-area devices emitting Fourier modes ...the ...
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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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High frequency continuous birefringence-induced oscillations in spin-polarized vertical-cavity surface-emitting lasers
... of external control (by the pump polarization) of these oscillations and their frequency is pre- dicted theoretically and confirmed ...semiconductor lasers and with high potential for applications as ...
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Vector cavity solitons in broad area Vertical-Cavity Surface-Emitting lasers
... mental setup is schematically shown in Fig. 1. The VCSEL is submitted to optical injection from an external cavity diode laser in Littrow configuration (Sacher Lasertechnik TEC100-960-60), isolated from the ...
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Circular polarization switching and bistability in an optically injected 1300 nm spin-vertical cavity surface emitting laser
... polarized external optical ...spin lasers in optical signal processing, optical switching and optical interconnection applications, such as all-optical inversion and all-optical signal regeneration, in ...
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Investigating Scaling Effects on The Static Characteristics of Long-Wavelength Vertical Cavity Lasers (VCSELs)
... wavelength vertical-cavity surface-emitting laser (VCS EL) lasing at 1550 nm have been studied based on the influence of the oxide aperture ...and external quantum efficiency have been ...
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Control of emitted light polarization in a 1310 nm dilute nitride spin-vertical cavity surface emitting laser subject to circularly polarized optical injection
... an external optical signal, generated by a 1300 nm external cavity tunable lasers (Master Laser, ML) and amplified using a semiconductor optical amplifier (SOA), is also injected into the ...
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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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Calculating Threshold Current Density and Output Power of Vertical Cavity Surface Emitting Laser
... Fig 1 shows the threshold current density with active region width for different confinement factors. Profile shows a linear nature which suggests that current density can be estimated at any thickness if nature of the ...
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Spin induced gigahertz polarization oscillations in vertical-cavity surface-emitting laser devices
... Spin-controlled vertical-cavity surface-emitting lasers (VCSELs) have been intensively studied in recent years because of the low threshold feasibility and the nonlinearity above ...
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Supermode Si/III–V lasers and circular Bragg lasers
... special surface preparation process (surface activation) is usually performed to change and control the bonding mechanism by controlling the surface ...chemistry. Surface activation can be ...
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Polarization fluctuations in vertical-cavity semiconductor lasers
... Polarization fluctuations are present in all lasers, but are exceptionally strong in semiconductor vertical-cavity surface-emitting lasers ~ VCSELs ! . The reason for this is ...
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