Adjustable random laser chip based on double-sided PDMS wrinkles

• Main Authors: WANG WENJIE, JI WEIBANG, LIU SHAODING, CHEN JINGDONG, SONG YATING
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2018
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention relates to an adjustable random laser chip based on double-sided PDMS wrinkles, belonging to the technical field of random laser chips; the technical problem is solved by providing an adjustable random laser chip with low cost, simple preparation and convenient operation; the technical solution adopted is that: the adjustable random laser comprises a first PDMS sheet, a gain medium solution and a second PDMS sheet, the lower surface of the first PDMS sheet has a wrinkled structure, the upper surface of the second PDMS sheet has a wrinkled structure, and the gain medium solution is sandwiched between the first PDMS sheet and the second PDMS sheet and in contact with the wrinkled surfaces; and a pump laser pumps the adjustable random laser chip, one of the PDMS sheets is movedin a direction perpendicular to the wrinkled direction, the wrinkled period formed between the two PDMS sheets changes, and the wavelength of the exiting laser also changes. The adjustable random laser chip can be widely appl