vertical-surface emitting-lasers
Polarization dynamics in vertical-cavity surface emitting lasers
... 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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Analysis of spatial emission structures in vertical-cavity surface-emitting lasers with feedback from a volume Bragg grating
... We investigate the spatial and spectral properties of broad-area vertical-cavity surface-emitting lasers with frequency-selective feedback by a volume Bragg grating. We demonstrate wavelength ...
8
Temperature dependence of spontaneous switch-on and switch-off of laser cavity solitons in vertical-cavity surface-emitting lasers with frequency-selective feedback
... A glass plate with an uncoated facet at the front and an anti-reflection coated facet at the back is used as a beam sampler to couple out the light from the cavity. The reflection is relying on Fresnel reflection and ...
19
Bistability conditions between lasing and non-lasing states for vertical-cavity surface-emitting lasers with frequency-selective optical feedback
... In order to integrate the model equations numerically, a forth-order variable-step method has been used. For low values of the feedback strength – i.e., σ being smaller the bistability threshold (13)–, a smooth LI-curve ...
13
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] ...
21
Polarization properties in the transition from below to above lasing threshold in broad-area vertical-cavity surface-emitting lasers
... Figure 1 shows the setup used for the experiments. The laser beam is collimated by a microscope objective with a numerical aperture of 0.8. VCSEL, cooling elements, and the objective are put into an air-tight box to ...
11
Controllable spiking patterns in long-wavelength vertical cavity surface emitting lasers for neuromorphic photonics systems
... of freedom in comparison to traditional edge-emitting semiconductor lasers. Furthermore, our approach uses inexpensive devices operating at the important telecom wavelength of 1300 nm and therefore totally ...
15
Controlled propagation of spiking dynamics in vertical-cavity surface-emitting lasers : towards neuromorphic photonic networks
... semiconductor lasers (SLs) have clearly dominated [12,16] given the potentials of these devices for application in information processing [15-22], optical interconnects [23] and communication networks ...
8
Electronic control of coherence in a two-dimensional array of photonic crystal surface emitting lasers
... the vertical green lines) of a short and long coupler cavity with regard to the lasing linewidths of two PCSELS of the array (indicated by the blue and red ...
6
Electrically-controlled neuron-like spiking regimes in vertical-cavity surface-emitting lasers at ultrafast rates
... Abstract—We report experimentally on the electrically- controlled, tunable and repeatable neuron-like spiking regimes generated in an optically-injected vertical-cavity surface-emitting laser (VCSEL) ...
7
Femtosecond synchronously in-well pumped vertical-external-cavity surface-emitting laser
... the lasers are generally tens of picoseconds wide with a strong chirp originating from self phase modulation (SPM) in the laser amplifier due to optical pumping and gain saturation ...nm lasers typically ...
6
Low divergence single-mode surface-emitting concentric-circular-grating terahertz quantum cascade lasers
... more vertical for the upper and lower boundaries than the left and right boundaries, which makes the shape of the disk slightly elliptical (the conjugate radius along the y-axis is ...
12
Vertically emitting indium phosphide nanowire lasers
... faster lasers, critically important aspects for optical data transmission, sensing and imaging applications ...secondary surface to ensure a large refractive index contrast between the NWs and their ...
18
Substrate emitting ring interband cascade lasers
... the surface layers, rather than via a cleave edge. In addition, surface emission enables two-dimensional array integration of multiple ...cascade vertical-cavity surface-emitting laser ...
5
Operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser
... If, rather than plotting the laser output power against the incident pump power, we use the addi- tional measurement of the reflected pump power to plot it against the absorbed power, we recover straight line fits. ...
7
Femtosecond synchronously mode-locked vertical-external cavity surface-emitting laser
... the pulses (or pulse sequences) are the same for each round-trip only in a very limited - though finite - interval of cavity mistuning. This is related to the fact that a timing offset due to a cavity length mismatch ...
12
Research on Photoelectric Characteristics of VCSEL
... many lasers, the Vertical Cavity Surface Emitting Laser (VCSEL) has attracted more attention for its characteristics of easy operation and low power ...
6
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 threshold, ...
8
Structural Analysis of InGaAs Based Vertical Cavity Surface-Emitting Quantum Well Laser
... nm lasers are based on the InGaAsP or InGaAlAs quantum-well (QW) active material system on an InP ...diode lasers suffer poor lasing performance at high temperature operation ...such lasers are poor ...
6
Supermode Si/III–V lasers and circular Bragg lasers
... Surface-emitting lasers have been attracting people’s interest over the past two decades because of their salient features such as low threshold current, single-mode operation, and wafer-scale ...
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