SG11201807118YA - Optical system, method of forming and operating the same - Google Patents

Abstract

PhotodetectorSecond Mirror First Mirror Laser source Non-linear crystal W O 17 / 160 225 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/160225 Al 21 September 2017 (21.09.2017) WIPO I PCT 111111111111110111010101111101011111011101111001101011101111111111111111110111111 FIG. 2 200 7 (51) International Patent Classification: GO1N 21/45 (2006.01) GO2F 1/39 (2006.01) GO1N 21/31 (2006.01) (21) International Application Number: PCT/SG2017/050090 (22) International Filing Date: 28 February 2017 (28.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201601947V 14 March 2016 (14.03.2016) SG (71) Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH [SG/SG]; 1 Fusionopolis Way, #20-10 Connexis North Tower, Singapore 138632 (SG). (72) Inventors: KRIVITSKIY, Leonid; c/o Data Storage Insti- tute, 2, Innovis, Fusionopolis Way, #08-01, Singapore 138634 (SG). KALASHNIKOV, Dmitry; c/o Data Stor- age Institute, 2, Innovis, Fusionopolis Way, #08-01, Singa- pore 138634 (SG). PATEROVA, Anna; c/o Data Storage Institute, 2, Innovis, Fusionopolis Way, #08-01, Singapore 138634 (SG). (74) Agent: VIERING, JENTSCHURA & PARTNER LLP; P.O. Box 1088, Rochor Post Office, Rochor Road, Singa- pore 911833 (SG). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, [Continued on next page] (54) Title: OPTICAL SYSTEM, METHOD OF FORMING AND OPERATING THE SAME (57) : Various embodiments may provide an optical system for de- termining a refractive index of a sample. The optical system may include a laser source configured to emit a laser beam, and a non-linear crystal con- figured to generate, based on the laser beam, an infrared light beam which passes through the sample, and a visible signal light beam. The optical system may further include a first mirror configured to reflect the visible signal light 202 beam, a second mirror configured to reflect the infrared light beam so that the reflected infrared light beam interacts with the reflected visible signal light beam in the non-linear crystal, and a photodetector configured to determine a property of the reflected visible signal light beam which has interacted with the reflected infrared light beam for determining the refractive index of the 204 sample. 206 208 210 WO 2017/160225 Al 1#11101MORMIMMEMINNIMMOINEOHOE# TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, Published: 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, with international search report (Art. 21(3)) SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).