Performance Analysis of Cantilever Beam for Tunable Fabry Perot Filter

2019 ◽  
Vol 17 (9) ◽  
pp. 739-745
Author(s):  
M. Shanmugapriya ◽  
T. Manimekalai ◽  
C. V. Gayathri
Keyword(s):  
Cantilever Beam ◽  
Electrostatic Force ◽  
Short Wave ◽  
Cavity Surface ◽  
Reflective Coating ◽  
Fabry Perot ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
The Impact ◽  
Long Wave Infrared

The design and simulation of the cantilever beam for tunable fabry perot filter is discussed in this paper. The fabry perot filter is tuned to operate in three frequency ranges namely short wave Infrared (SWIR), mid wave Infrared (MWIR) and long wave Infrared (LWIR) are operated in the frequency range of 1.6–2.5 μm, 3–5 μm and 8–12 μm respectively. The light that is emitted from the array of vertical cavity surface emitting laser (VCSEL) is tuned to the desired wavelength using this fabry perot filter. The fabry perot cavity length is varied using the MEMS cantilever. By applying the reflective coating to the arms of the cantilever, the fabry perot cavity is formed. The actuation given to the MEMS cantilever is electrostatic actuation. The potential difference between the two arms of the cantilever creates the electrostatic force, which attracts the free end of the cantilever. Due to the impact of the electrostatic force the arms get pulled in, as a result the separation between the mirrors varies, which in turn filters the desired wavelength. The array of cantilever is also simulated to get a desired pattern of the wavelength. The fabrication process flow for the simulated cantilever is explained. The fixed-free beam approach leads to the analysis of capacitance, stress, strain and displacement.

Optical Characterization of Iv-VI Mid-Infrared Vcsel

2001 ◽  
Vol 692 ◽  
Author(s):  
F. Zhao ◽  
H. Wu ◽  
T. Zheng ◽  
P. J. McCann ◽  
A. Majumdar ◽  
...  
Keyword(s):  
Room Temperature ◽  
Multiple Quantum Well ◽  
High Energy ◽  
Cavity Surface ◽  
Temperature Threshold ◽  
Multiple Quantum ◽  
Fabry Perot ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Increasing Temperature

AbstractPbSe/PbSrSe multiple-quantum-well (MQW) structures and PbSrSe thin films were grown on BaF2 (111) substrates by molecular beam epitaxy (MBE) and characterized by Fourier transform infrared (FTIR) spectrometer. Strong photoluminescence without Fabry-Perot interference fringes was observed even at room temperature from the MQW structures. The peak energies for the MQW structures with different well widths shifted to high energy with increasing temperature. The absorption edge of PbSrSe layer was determined by transmission spectra. Meanwhile, we designed and fabricated λ=4.1 μm MQW vertical cavity surface emitting laser (VCSEL). A power output of 40 mW was obtained at room temperature. The room temperature threshold pump density is 200 kW/cm2.

scholarly journals Long-wavelength GaInNAs/GaAs Vertical-cavity Surface-emitting Laser for Communication Applications

2020 ◽  
Vol 8 (1) ◽  
pp. 107-111
Author(s):  
Faten A. Chaqmaqchee
Keyword(s):  
Quantum Wells ◽  
Light Emission ◽  
Cavity Surface ◽  
Long Wavelength ◽  
Temperature Spectra ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Emitting Lasers ◽  
The Impact ◽  
Vertical Cavity

This paper presents a comprehensive study of optical and electrical properties of vertical-cavity surface-emitting lasers(VCSELS) for long wavelength communication applications. The device consists of GaInNAs/GaAs multi-quantum wells QWs that enclosed between standard top and bottom epitaxially grown on AlGaAs/GaAs distributed Bragg reflectors. The impact of driven currents and injecting optical powers through QWs layers on the output light emission is addressed. Room temperature spectra measurements are performed at various applied currents using 980 nm pump laser and maximum intensity amplitude at around 21 dB was achieved.

scholarly journals Impact of the active area position in a nitride tunnel junction vertical-cavity surface-emitting laser on its emission characteristics

2020 ◽  
Vol 50 (2) ◽  
Author(s):  
Patrycja Śpiewak ◽  
Michał Wasiak ◽  
Robert P. Sarzała
Keyword(s):  
Tunnel Junction ◽  
Active Area ◽  
Cavity Surface ◽  
Emission Characteristics ◽  
Santa Barbara ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
The University ◽  
The Impact ◽  
Vertical Cavity

This paper presents results of numerical simulations of a nitride semiconductor vertical-cavity surface-emitting laser (VCSEL) with a tunnel junction. The modeled laser is based on a structure created at the University of California in Santa Barbara. The analysis concerns the impact of the position of laser’s active area on the emitted power. Both small detunings from the standing wave anti-node, and positioning of the active area at different anti-nodes are considered.

High-speed vertical-cavity surface-emitting laser (VCSEL) absorption spectroscopy of ammonia (NH3) near 1.54 μm

2003 ◽  
Vol 76 (5) ◽  
pp. 603-608 ◽  
Author(s):  
G. Totschnig ◽  
M. Lackner ◽  
R. Shau ◽  
M. Ortsiefer ◽  
J. Rosskopf ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
High Speed ◽  
Cavity Surface ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity
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