Electro-Optic Power Limiter: Broadband, Self-Actuating Optical Limiter for Visible and Infrared Radiation

1994 ◽  
Vol 374 ◽  
Author(s):  
Tallis Y. Chang ◽  
Ian McMichael ◽  
John H. Hong ◽  
Monte Khoshnevisan
Keyword(s):  
Wavelength Range ◽  
Infrared Radiation ◽  
Nonlinear Optical ◽  
Optical Power ◽  
Threshold Power ◽  
Near Ir ◽  
Electro Optic ◽  
Optical Limiter ◽  
Low Threshold ◽  
Unique Capability

AbstractWe present studies of an optical power limiter that uses a combination of the photoconductive and linear electro-optic effects. The electro-optic power limiter (EOPL), first demonstrated using CdTe in the near IR, possesses many desirable qualities including broadband wavelength responsivity, self-actuation, and low threshold power. One unique capability of EOPL, not found in any other nonlinear optical power limiter, is the fact that any light - coherent or incoherent - can be used. Our studies in CdTe, GaAs, and BSO crystals resulted in extending the wavelength range from the visible to MWIR wavelengths.

scholarly journals Low-threshold power and tunable integrated optical limiter based on an ultracompact VO2/Si waveguide

APL Photonics ◽  
2021 ◽  
Author(s):  
Jorge Parra ◽  
Juan Navarro ◽  
Mariela Menghini ◽  
Maria Recaman ◽  
Jean-Pierre Locquet ◽  
...  
Keyword(s):  
Threshold Power ◽  
Optical Limiter ◽  
Integrated Optical ◽  
Low Threshold

Broad Band Optical Power Limiting in Vanadium Doped Cd0.55Mn0 45Te Crystals

1997 ◽  
Vol 479 ◽  
Author(s):  
S. B. Trivedi ◽  
R. J. Chen ◽  
K. Grasza ◽  
S. W. Kutcher ◽  
G. V. J. Nathan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Background Radiation ◽  
Broad Band ◽  
Optical Power ◽  
Optical Limiting ◽  
Large Field ◽  
The Past ◽  
Electro Optic ◽  
Low Threshold ◽  
Compact Design

AbstractA variety of approaches have been used for optical limiting in the past [1–6].A relatively new approach, an electro-optic power limiter (EOPL) has a simple and compact design, wavelength agile sensitivity, the ability to respond to coherent as well as incoherent radiation, low threshold and a large field of view (up to 15°). EOPL devices allow the transmission of low intensity background radiation while simultaneously blocking the damaging high intensity beam. We have demonstrated EOPL in the past using the II-VI semiconductors CdTe:In [7,8], CdTe:V [9] and ZnTe [10]. In this paper, we are reporting on EOPL using a new ternary II-VI semiconductor Cdl-xMnxTe:V. Cd0.55Mn0.45Te is capable of limiting optical radiation from visible (0.630.tm) to near infrared (1.5pm) wavelengths, which covers the wavelength ranges of both CdTe and ZnTe combined. Additionally, crystals of Cd0.55Mn0.45Te are relatively easier to grow than ZnTe. We report our preliminary results of optical limiting in Cd0.55Mn0.45Te:V at 0.780μm, 0.895μm, and 1.06μm, and we discuss the materials issues involved in improving and optimizing Cd1-xMnxTe for electro-optic power limiting.

Results of Spatial Structure of Atmosphere Radiation in a Spectral Range (1.5–2) µm Research

2018 ◽  
pp. 7-13
Author(s):  
Anton M. Mishchenko ◽  
Sergei S. Rachkovsky ◽  
Vladimir A. Smolin ◽  
Igor V . Yakimenko
Keyword(s):  
Spatial Structure ◽  
Unmanned Aerial Vehicle ◽  
Wavelength Range ◽  
Spectral Range ◽  
Near Ir ◽  
Optoelectronic Systems ◽  
Aerial Vehicle

Results of experimental studying radiation spatial structure of atmosphere background nonuniformities and of an unmanned aerial vehicle being the detection object are presented. The question on a possibility of its detection using optoelectronic systems against the background of a cloudy field in the near IR wavelength range is also considered.

The sensitization of laser-induced heat of Er3+ doped Y2O3 nanocrystals by codoped with Mn2+

2015 ◽  
Vol 29 (22) ◽  
pp. 1550158
Author(s):  
Yunfeng Bai ◽  
Minjie Luan ◽  
Linjun Li ◽  
Zhelong He ◽  
Dongyu Li
Keyword(s):  
Power Density ◽  
Thermal Emission ◽  
Energy Levels ◽  
Excitation Power ◽  
Threshold Power ◽  
Excitation Power Density ◽  
Ir Laser ◽  
Order Of Magnitude ◽  
Low Threshold ◽  
Density Threshold

Low threshold power density cw laser-induced heat has been observed in [Formula: see text] and [Formula: see text] codoped [Formula: see text] nanocrystals under excitation by a 980 nm IR laser. Codoped [Formula: see text] remarkably reduces the power density threshold of laser-induced heat compared with [Formula: see text] doped [Formula: see text] nanocrystals. When the excitation power density exceed [Formula: see text], [Formula: see text] codoped [Formula: see text] nanocrystals emit strong blackbody radiation. The thermal emission of [Formula: see text] should originate from the multiphonon relaxation between neighboring energy levels. One additional UC-PL enhancement is observed. The UC-PL intensity can be enhanced by an order of magnitude through high temperature calcination caused by light into heat.

WAVEGUIDING STRUCTURE EXHIBITING VARIOUS NONLINEAR OPTICAL TRANSFER FUNCTIONS REALIZED WITH A WANNIER-STARK MODULATOR CONTAINING AN InGaAs/InP SUPERLATTICE

1995 ◽  
Vol 04 (02) ◽  
pp. 325-336 ◽  
Author(s):  
H. C. NEITZERT ◽  
C. CACCIATORE ◽  
D. CAMPI ◽  
C. RIGO
Keyword(s):  
Nonlinear Optical ◽  
Stark Effect ◽  
Transfer Functions ◽  
Polarized Light ◽  
Optical Power ◽  
Optical Signal ◽  
Signal Frequency ◽  
Frequency Multiplication ◽  
Short Period ◽  
Optical Transfer

We report on the application of a self electro-optic effect device in waveguiding configuration for the generation of a wide variety of different nonlinear optical transfer functions. It makes use of the Wannier-Stark effect in an InGaAs/InP short period superlattice and operates at room temperature for TE-polarized light around 1.55 μm. In particular, optical bistability, optical signal-frequency multiplication and the operation as an optical power discriminator are demonstrated.

scholarly journals Implementation of spatial overlap modulation nonlinear optical microscopy using an electro-optic deflector

2013 ◽  
Vol 4 (10) ◽  
pp. 1937 ◽  
Author(s):  
Keisuke Isobe ◽  
Hiroyuki Kawano ◽  
Akiko Kumagai ◽  
Atsushi Miyawaki ◽  
Katsumi Midorikawa
Keyword(s):  
Optical Microscopy ◽  
Nonlinear Optical ◽  
Nonlinear Optical Microscopy ◽  
Spatial Overlap ◽  
Electro Optic
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