نتایج جستجو برای: vcsel

تعداد نتایج: 808  

1995
H. Shoji

Vertical cavity surface emitting laser (VCSEL) is attractive light source in a future massively parallel computing system with many processor elements (PEs). We proposed optical interconnection by wavelength domain addressing for realizing switch-less and reconfigurable interconnection [1]. For such a system, 1.3 µm VCSEL has advantages over short wavelength VCSEL such as 0.98 µm VCSEL because ...

2011
Yihan Xiong Robert Van Leeuwen Laurence S. Watkins Jean-Francois Seurin Guoyang Xu Alexander Miglo Qing Wang Chuni Ghosh

Solid-state lasers pumped by high-power two-dimensional arrays of vertical-cavity surface-emitting lasers (VCSELs) were investigated. Both end-pumping and side-pumping schemes of Nd:YAG lasers with high power kW-class 808 nm VCSEL pump modules were implemented. For one application 10 mJ blue laser pulses were obtained from a frequencydoubled actively Q-switched VCSEL-array dual side-pumped Nd:Y...

2012
A. V. Barve Y. Zheng L. Johansson A. Mehta A. Husain L. Coldren

We report on a polarization modulation in vertical cavity surface emitting lasers (VCSEL), based on RF electrical injection. Complex polarization dynamics in the single mode regime is studied as a function of RF frequency and power at different bias currents. It has been observed that the polarization state of the VCSEL can be altered by changing the frequency of RF current modulation. Time res...

2013
David F. W. Yap S. P. Koh

In this paper, the characteristics of longwavelength vertical-cavity surface-emitting laser (VCSEL) lasing at 1550 nm have been studied based on the influence of the oxide aperture radius. Using the oxide confined VCSEL model, we examine the static operations taking into account the carrier-noise, photon-noise and phase-noise including feedback of the external cavity. From the simulation, sever...

Journal: :Optics express 2007
Jae Hwan Eric Kim Lukas Chrostowski Eric Bisaillon David V Plant

We demonstrate a Finite-Difference Time-Domain (FDTD) phase methodology to estimate resonant wavelengths in Fabry-Perot (FP) cavity structures. We validate the phase method in a conventional Vertical-Cavity Surface-Emitting Laser (VCSEL) structure using a transfer-matrix method, and compare results with a FDTD reflectance method. We extend this approach to a Sub-Wavelength Grating (SWG) and a P...

Journal: :Optics express 2009
Christopher Chase Ye Zhou Connie J Chang-Hasnain

We report on the effects of shrinking the physical size of a high index contrast grating (HCG) on a vertical cavity surface-emitting laser (VCSEL). HCGs previously had been simulated assuming infinite periodicity. Here we probe through simulation and experiment the effect of reducing the HCG to only a few periods. We experimentally realize lasing VCSELs with as few as 4 periods of HCG. By shrin...

Journal: :IEICE Electronic Express 2011
Nobuyuki Otake Eiji Kojima Hitoshi Yamada Yukihiro Takeuchi

−47− Vertical-cavity surface-emitting lasers (VCSELs) are attractive for various applications because of their low cost, ease of designing two-dimensional arrays, and the low divergence angles of the output beam, provided that the issue of their relatively low output power is addressed. The maximum output power of previously reported VCSELs was just over 2 W for CW operation and just over 20 W ...

Journal: :IEEE Transactions on Microwave Theory and Techniques 2009

2004
Bing Shao Sanja Zlatanovic Sadik C. Esener

The compactness of VCSELs (Vertical Cavity Surface Emitting Lasers) provides them the ability to meet the demands of current biochip technologies. In earlier research, optical trapping of live biological cells and microspheres based on VCSEL array has been realized in the form of parallel static traps on a translation stage. In microfluidic systems (lab-ona-chip devices), the background flow in...

2015
Victor Kozlov Anthony Chan Carusone Edward S. Rogers

A Vertical Cavity Surface Emitting Laser (VCSEL) driver in 65nm CMOS selectively-enables parallel low-power CMOS drivers to shape the output current waveforms and compensate VCSEL nonlinearities. The CMOS waveform-shaping drivers are AC-coupled allowing them to operate from a 1-V supply to save power, while parallel low-frequency paths provide programmable DC biasing from a 3-V supply. The meas...

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