نتایج جستجو برای: vcsel

تعداد نتایج: 808  

2012
Rainer Michalzik

Six books written in English with an exclusive focus on VCSELs have been published during the years 1995–2003 [1–6]. Enormous progress of VCSEL performance and applications has been achieved since then. In 2012 Springer-Verlag will thus publish a new VCSEL book [7] which will be a multi-author volume containing 18 chapters and about 550 pages. Figure 1 shows its tentative cover. Some of the cha...

Journal: :Optics express 2015
Emanuel P Haglund Sulakshna Kumari Petter Westbergh Johan S Gustavsson Gunther Roelkens Roel Baets Anders Larsson

We demonstrate a short-wavelength hybrid-cavity vertical-cavity surface-emitting laser (VCSEL) heterogeneously integrated on silicon. A GaAs-based "half-VCSEL" has been attached to a dielectric distributed Bragg reflector (DBR) on a silicon wafer using ultra-thin divinylsiloxane-bis-benzocyclobutene (DVS-BCB) adhesive bonding, thereby creating a cavity with the standing-wave optical field exten...

Journal: :Optics express 2011
Lew Goldberg Chris McIntosh Brian Cole

A compact, passively Q-switched Nd:YAG laser utilizing a Cr4+:YAG saturable absorber, is end-pumped by the focused emission from an 804 nm vertical-cavity surface-emitting laser (VCSEL) array. By changing the VCSEL operating current, we demonstrated 2x adjustability in the laser output pulse energy, from 9 mJ to 18 mJ. This energy variation was attributed to changes in the angular distribution ...

2004
Yong K. Kim Kent D. Choquette Judith E. Baker Andrew A. Allerman

Depth profile analysis by high-resolution secondary ion mass spectrometry ~SIMS! can accurately determine C and Si concentrations within monolithic reflectors of vertical cavity surface-emitting lasers ~VCSELs!. These SIMS depth profiles are quantified to atomic concentrations using relative sensitivity factors and calibration standards, and are correlated to the laser characteristics. We compa...

Journal: :Optics express 2013
Ajit V Barve Yan Zheng Leif A Johansson Alok Mehta Anis Husain Larry A Coldren

We report on a study of polarization properties of asymmetric, multimode vertical-cavity surface-emitting lasers (VCSEL) subjected to electrical RF modulation. When subjected to RF modulation, complex frequency-dependent polarization properties, especially near the polarization switching point are revealed. We propose a scheme of rapidly switching the two RF frequencies modulating the VCSEL, in...

2003
Ting Chen Donald J. Hayes

Vertical cavity surface emitting laser (VCSEL) arrays and photodiode (PD) arrays have emerged on the market for short reach fiber communications and other applications. However, the lack of efficient, low-cost methods for light coupling and electrical connection has become a barrier to new products incorporating their high-density and parallel advantages. To address these challenges, we have de...

2004
Li Fan Ming C. Wu H. C. Lee

We report a novel individually addressable, individually wavelength tunable 8 x 6 vertical cavity surface-emitting laser (VCSEL) array. A two-dimensional array of individually wavelength-tunable VCSELs is very attractive for free-space optical interconnect in massively parallel computers [ 1-21. VCSEL’s have large mode spacing due to the very short cavity and are particularly suitable for conti...

Journal: :Photonics 2023

We suggest a new construction of spin-VCSEL with an embedded nematic liquid crystal (LC) in second cavity. design such coupled-cavity LC-VCSEL and develop procedure for calculating its LC-voltage dependent polarization resolved resonant longitudinal modes their quantum-well confinement factors. Using these characteristics, we are able to slightly modify the spin-flip VCSEL model include voltage...

2007
Jim Tatum

Since the commercialization of Vertical Cavity Surface Emitting Lasers (VCSELs) in 1996, Finisar’s Advanced Optical Components Division has shipped well over 50 Million VCSELs. The vast majority of these were shipped into the data communications industry, which was essentially the only volume application until 2005. The driver for VCSEL manufacturing might well shift to the increasingly popular...

2009
Wolfgang Schwarz

Unlike a vertical-cavity surface-emitting laser (VCSEL), which comprises two highly reflecting distributed Bragg reflectors (DBRs), the extended cavity in VECSELs employs a third mirror. The fabrication of such a device requires a long process chain, including the patterning of the VCSEL structures, definition of the extended optical resonator, mirror coating and die bonding. While VCSELs have ...

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