vertical-cavity laser diode
Clinical and histopathological variance in healing of leukoplakia with diode lasers versus scalpel: evidence based comparative study
... and vertical dimension of the tissue destruction is neither addicted to the diameter of the fibre, nor related to the mode of operation but is only depending on the average power ...the diode laser ...
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Structural Analysis of InGaAs Based Vertical Cavity Surface-Emitting Quantum Well Laser
... laser diode [1]. Conventional 1300 nm lasers are based on the InGaAsP or InGaAlAs quantum-well (QW) active material system on an InP substrate. Unfortunately, these 1300 nm InP-based diode lasers ...
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Investigation of near infrared laser diodes for application in space based spectroscopic gas sensing
... prominent laser diode sources presently available on the market for gas sensing applications is ...common laser diodes and the design feature unique to all is also ...with laser ...
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Spatially Resolved Absorption Spectroscopy on a Microhollow Cathode Helium Plasma Using a Vertical-Cavity Surface-Emitting Laser
... VCSEL diode (Vixar, V670S-002-0001) positioned on a diode mount (Thorlabs, ...the laser diode was set at ...the laser light fre- quency, we modulated the diode current by the ...
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Tunable diode laser absorption spectroscopy based detection of propane for explosion early warning by using a vertical cavity surface enhanced laser source and principle component analysis approach
... DFB laser source is used, where the spectral intensities arising from the different gas samples (representing different concentrations at a peak wavelength) were used and fitted for these gas concentrations ...
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Diode laser-based cavity ring-down instrument for NO 3,N2O5 , NO, NO 2and O3 from aircraft
... on the time scale of the instrument zero frequency. Such variations can, in principle, be corrected by the reference channel (see above), though in practice the active correc- tion described here proved as useful as a ...
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Suppression of residual amplitude modulation appeared in commercial electro-optic modulator to improve iodine-frequency-stabilized laser diode using frequency modulation spectroscopy
... the laser source. The laser beam from the ECLD is split into a probe beam and a pump beam by a polar- izing beam splitter (PBS) after passing through a half-wave plate ...
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Comparative Study of Diode Laser versus Diathermy in Soft Tissue Surgical Procedures of Oral Cavity
... after laser application was slightly accelerated compared to diathermy ...in laser group and day 3 in ...in laser group but in diathermy group formation of granulation tissue was delayed ...
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Development of continuous wave and mode locked titanium sapphire laser
... ultrafast laser technology has shown the rapidly progress over the past ...ultrafast laser that makes it so ...this laser allows very fast temporal resolution. Therefore this kind of laser can ...
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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 ...
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Femtosecond synchronously in-well pumped vertical-external-cavity surface-emitting laser
... The schematic structure of the VECSEL gain element and the laser cavity are shown in Fig. 1. The VECSEL wafer used in this work was grown by MOCVD. It was originally designed for conventional barrier ...
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Femtosecond synchronously mode-locked vertical-external cavity surface-emitting laser
... the laser characteristics as a function of pump duration and cavity tuning were performed showing the potentials as well as the limitations of the synchronous pumping approach for mode- ...
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How the carrier momentum influences the polarization properties of a vertical-cavity semiconductor laser
... Vertical-cavity surface-emitting lasers ~ VCSEL’s ! are a very interesting breed of semiconductor lasers, both funda- mentally and from an applications point of view. This is particularly true for the ...
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Thermal Analysis of Blue Laser Diode for Solid State Lighting Application
... In past few years InGaN-based semiconductors have attracted much attention for application in solid-state light sources. Recently, their usage is constantly in- creasing in worldwide market. High-brightness white LEDs ...
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Spin induced gigahertz polarization oscillations in vertical-cavity surface-emitting laser devices
... of the carrier density the carrier density in the spin up subband begins to relax instantly and depletes within less than 200 ps after the incoming excitation pulse. It should be noted, that the carrier density of the ...
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Calculating Threshold Current Density and Output Power of Vertical Cavity Surface Emitting Laser
... the vertical cavity surface emitting laser is analytically calculated as a function of different electrical and optical parameters, and their interdependency is also ...
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Near infrared spectroscopy for fibre based gas detection
... tuneable diode laser spectroscopy technique capable of accurate and repeatable measurements of absorption depths and line ...tuneable laser system which can be sinusoidally wavelength ...
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Ultrashort pulse generation from quantum dot semiconductor diode lasers
... Increasing the reverse bias on the saturable absorber is a very convenient bias control to decrease the absorber recovery time, which plays a significant part in reducing the pulse duration. However, there are two main ...
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Nonresonant self-injection seeding of a gain-switched diode laser
... external cavity had no observed effect on the spectra for a of equal ...simple cavity without any deliberate spectral selectivity (Fabry–Pérot etalon properties of the glass slide may be ruled out because ...
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Design of a LW-VCSEL Optical Source
... The vertical 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 ...
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