surface emitting laser
Spin induced gigahertz polarization oscillations in vertical-cavity surface-emitting laser devices
... In summary, we have investigated the polarization dynamics of an electrically pumped vertical-cavity surface-emitting laser with optically spin induced carriers at room temperature. In our experiment ...
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Calculating Threshold Current Density and Output Power of Vertical Cavity Surface Emitting Laser
... cavity surface emitting laser is analytically calculated as a function of different electrical and optical parameters, and their interdependency is also ...mirror surface smoothness, ...
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Spatially Resolved Absorption Spectroscopy on a Microhollow Cathode Helium Plasma Using a Vertical-Cavity Surface-Emitting Laser
... 300 µ m diameter, we measured the absorption spectra with spatial resolution of 30 µ m using a vertical-cavity surface-emitting laser diode. The spectra observed near the electrode at 10 kPa gas ...
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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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Femtosecond synchronously mode-locked vertical-external cavity surface-emitting laser
... Hence a piezoelectric transducer with an expansion parameter of 4.5 nm/V was attached to one of the plane HR mirrors of the laser cavity. The maximum movement of the piezoelectric transducer was limited to 4.5 µm ...
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Femtosecond synchronously in-well pumped vertical-external-cavity surface-emitting laser
... the laser pulse was also recorded and considerable variations again observed in the − 4 µm to +4 µm ...the laser cavity was shortened from +4 µm to 0 µm, the FWHM of the autocorrelation first narrowed from ...
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Operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser
... not change significantly. The laser was coupled into a 100 m fiber with a NA of 0.22. After the focusing system, the spot size on the VECSEL was roughly 110 m in diameter. The length of the external cavity was ...
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Quantum modeling of semiconductor gain materials and vertical-external-cavity surface-emitting laser systems
... to laser operation only the central peak is relevant defining a lasing wavelength of 843 nm at room temperature because this is the wavelength favored by the resonant periodic gain ...
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Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices
... Figure 5 shows a typical result from the rate-equation model for a hybrid excitation regime slightly below electrical threshold. As observed experimentally in section 2 the anisotropic pumping leads to an unbalanced spin ...
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Circular polarization switching and bistability in an optically injected 1300 nm spin-vertical cavity surface emitting laser
... Spin-polarized vertical cavity surface emitting lasers (spin-VCSELs) have been of great interest in recent years due to their functionality and characteristics [1- 4]. In such devices, the spin polarized ...
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Design of a LW-VCSEL Optical Source
... cavity surface emitting laser (VCSEL) is a low cost light source with attractive performance characteristics such as low power consumption, high speed capabilities at low currents, and a circular ...
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Structural Analysis of InGaAs Based Vertical Cavity Surface-Emitting Quantum Well Laser
... A theoretical design has been presented of InGaAs- based 1.3 µm vertical cavity surface emitting laser (VCSEL). The design has been optimized by considering the thickness of quantum well and barrier, ...
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A Long Haul Carrier Generated Ultra Dense Passive Optical Network Incorporating Low Cost VCSEL
... A vertical cavity surface emitting laser generates the seeding light and then the seeding light is injected into MZM. The intensity modulator output signal at 2.5 Gbit/s transmitted via a 120 km SMF ...
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Free-space optics mode-wavelength division multiplexing system using LG modes based on decision feedback equalization
... Furthermore, in order to make FSO more feasible in respect to high capacity performance, photonic and electronic equalization schemes need to be integrated and explored, which will scale FSO better than through being ...
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Research on Photoelectric Characteristics of VCSEL
... the laser is an important factor to be considered in the system ...the laser to ensure the accuracy of the simulation ...Cavity Surface Emitting Laser (VCSEL) has attracted more ...
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An electrically pumped surface-emitting semiconductor green laser
... nanocrystal surface- emitting laser (NCSEL) diode, which is free of DBRs and can operate efficiently in the green ...injected surface-emitting green laser diode without using ...
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Unit3_LED_LASER_PPT.pdf
... Gives high efficiency and high output capabilities compared to DFB and DBR laser due to small active region... Vertical cavity surface emitting laser (VCSEL)[r] ...
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Vertical-Cavity Surface-Emitting Lasers for Ultra-High Speed Photonics
... vertical‐cavity surface‐emitting laser (VCSEL) with a transverse‐coupled‐ cavity (TCC) for a larger enhancement of the modulation bandwidth used in ultra‐high‐ speed ...
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CH4 IPDA Lidar mission data simulator and processor for MERLIN: prototype development at LMD/CNRS/Ecole Polytechnique
... module in PROLID-L2 performs the averaging over 50km. The method used is described in [6]. Currently the LIDSIM/PROLID-L2 chain is functional and validated. To validate it, we choose to work with TIGR (Thermodynamic ...
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Laser textured surface gradients
... Surfaces with special properties including superhydrophobic- ity, superhydrophilicity and gradient are important for numerous applications in biomedical, microfluidics, sensors and suppression of the coffee-stain effect ...
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