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1. (WO2019046212) GAS COOLED FARADAY ROTATOR AND METHOD
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Pub. No.: WO/2019/046212 International Application No.: PCT/US2018/048185
Publication Date: 07.03.2019 International Filing Date: 27.08.2018
IPC:
G02B 27/28 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
28
for polarising
Applicants:
LAWRENCE LIVERMORE NATIONAL SECURITY, LLC [US/US]; 7000 East Avenue P.O. Box 808, L-703 Livermore, California 94550, US
Inventors:
BAYRAMIAN, Andrew J.; US
ERLANDSON, Alvin C.; US
MASON, Daniel C.; US
Agent:
GALLENSON, Mavis S.; US
LUSINCHI, Laurent P.; US
TOWER, Lee W.; US
BERG, Richard P.; US
KOBZEFF, Joseph M.; US
Priority Data:
62/551,20528.08.2017US
Title (EN) GAS COOLED FARADAY ROTATOR AND METHOD
(FR) ROTATEUR DE FARADAY REFROIDI AU GAZ ET PROCÉDÉ
Abstract:
(EN) To enable several orders of magnitude increases in average power and energy handling capability of Faraday rotators, the technology utilizes high speed gas cooling to efficiently remove thermal loading from the Faraday optic faces while minimizing the thermal wavefront and thermal birefringence by creating a longitudinal thermal gradient. A recirculating gas cooling manifold accelerates the gas over the surface of the slab to create a turbulent flow condition which maximizes the surface cooling rate. The technology further provides a spatially uniform thermal profile on the Faraday slabs.
(FR) La présente invention vise à permettre plusieurs ordres d'augmentations de grandeur de la capacité de gestion d'énergie et de puissance moyenne de rotateurs de Faraday. À cet effet, l'invention met en œuvre un refroidissement au gaz à grande vitesse afin d'éliminer efficacement la charge thermique des faces d'optique de Faraday tout en réduisant à un minimum le front d'onde thermique et la biréfringence thermique par création d'un gradient thermique longitudinal. Un collecteur de refroidissement au gaz de recirculation fait accélérer le gaz sur la surface de la plaque afin de créer un état d'écoulement turbulent qui optimise la vitesse de refroidissement de surface. L'invention assure en outre un profil thermique spatialement uniforme sur les plaques de Faraday.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)