| Deep Horizontal Atmospheric Turbulence Modeling and Simulation with a Liquid Crystal Spatial Light Modulator |
Jun 2012 |
7 pages |
| Authors:
Peter Jacquemin; Bautista Fernandez; Christopher C Wilcox; Ty Martinez; Brij Agrawal; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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 | We investigate the performance of a Liquid Crystal (LC) Spatial Light Modulator (SLM) as an optical device for generating high intensity atmospheric turbulence in the laboratory. The experimental setup represents long range horizontal beam propagation at a low altitude where the conditions of atmospheric turbulence can be most severe. WaveProp is a software package written by the Optical Sciences Company (tOSC) which is used for simulating electro-magnetic field propagation through ... |
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| Horizontal Horizontal Propagation Deep Turbulence Test Bed |
Nov 2011 |
16 pages |
| Authors:
Melissa Corley; Freddie Santiago; Ty Martinez; Brij N Agrawal; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The Navy is interested in horizontal laser propagation studies in a maritime environment near the ocean surface, for applications including imaging and high-energy laser propagation. The Naval Postgraduate School (NPS) in Monterey, California, and the Naval Research Laboratory (NRL) Wavefront Sensing and Control Division in Albuquerque, New Mexico, are collaborating in the development of a horizontal propagation testbed with adaptive optics for correction and simulation of atmospheric deep turbulence conditions. ... |
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| Carbon Fiber Reinforced Polymer (CFRP) Optics Quality Assessment for Lightweight Deployable Optics |
Sep 2010 |
9 pages |
| Authors:
Jonathan R Andrews; Ty Martinez; Sergio R Restaino; Freddie Santiago; Christopher C Wilcox; Scott W Teare; Robert C Romeo; Robert N Martin; NAVAL RESEARCH LAB KIRTLAND AFB NM REMOTE SENSING DIV
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| The Naval Research Laboratory and Composite Mirror Applications (CMA) have been working together for several years on the development of Carbon Fiber Reinforced Polymer (CFRP) optics and telescopes. We have documented the potential advantages of this technology in several other publications, including structural, thermal and weight advantages over traditional steel and glass optical systems. In this paper we present results of a battery of optical tests done on various CFRP ... |
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| Multi-Conjugate Adaptive Optics Test-bed for Horizontal Propagation |
Sep 2009 |
9 pages |
| Authors:
Sergio R Restaino; Jonathan R Andrews; Ty Martinez; Christopher C Wilcox; Freddie Santiago; Don M Payne; Scott W Teare; NAVAL RESEARCH LAB KIRTLAND AFB NM REMOTE SENSING DIV
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| Our program for the upgrade of the Naval Prototype Optical Interferometer with large telescopes and adaptive optics has produced a test-bed for the in system evaluation and testing of our MEMs adaptive optics components and system performances. We have already reported in recent publications the basic characteristics of the test-bed. In order to improve the capabilities of such laboratory set-up we have started an upgrade that aims at developing a ... |
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| Spectrum Tunable Quantum Dot-In-A-Well Infrared Detector Arrays for Thermal Imaging |
Sep 2008 |
13 pages |
| Authors:
Jonathan R Andrews; Sergio R Restaino; Scott W Teare; Sanjay Krishna; Christopher C Wilcox; Ty Martinez; Luke Lester; NAVAL RESEARCH LAB KIRTLAND AFB NM REMOTE SENSING DIV
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| The Center for High Technology Materials at the University of New Mexico has been investigating quantum dot and quantum well detectors for thermal infrared imaging applications. Recent advances in manufacturing have led to the development of a hybrid quantum dot-in-a-well configuration, allowing many of the benefits of each type of detector in addition to multiple transition energies. These transition energies (and thus wavelengths of detection) are also bias tunable providing ... |
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| Active Optical Zoom for Tracking |
Sep 2008 |
5 pages |
| Authors:
Ty Martinez; Freddie Santiago; David V Wick; Brett E Bagwell; Sergio R Restaino; Christopher C Wilcox; Jonathan R Andrews; Don M Payne; NAVAL RESEARCH LAB WASHINGTON DC
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| In order to optically vary the magnification of an imaging system, continuous mechanical zoom lenses require multiple optical elements and use fine mechanical motion to precisely adjust the separations between groups of lenses. By incorporating active elements into the optical design, imaging systems that are capable of variable optical magnification with no macroscopic moving parts are possible. Changing the effective focal length and magnification of an imaging system can be ... |
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| Use of Two Deformable Mirrors AO System for an Interferometric Test-Bed |
01-Jan-2004 |
10 pages |
| Authors:
Sergio R Restaino; Dave V Wick; Ty Martinez; Don T Payne; G C Gilbreath; NAVAL RESEARCH LAB WASHINGTON DC REMOTE SENSING DIV
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| In this paper, we present results on a test-bed for the use of adaptive optics (AO) in optical interferometry. The test-bed is based on two deformable mirrors made by OKO technologies. The two mirrors are simultaneously controlled by the same computer and control software. The experimental set is based on our portable adaptive optics system. The goal of this test-bed is to study and characterize the effects of aberrations on ... |
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