Soliton-pulse-based, wavelength-tunable femtosecond fiber laser light source for NIR 1650-1900 nm emission

Ryota Kakei; Makoto Nakano; Shigetoshi Okazaki; Norihiko Nishizawa; Shin Kato

doi:10.1117/12.2650497

17 March 2023 Soliton-pulse-based, wavelength-tunable femtosecond fiber laser light source for NIR 1650-1900 nm emission

Ryota Kakei, Makoto Nakano, Shigetoshi Okazaki, Norihiko Nishizawa, Shin Kato

Author Affiliations +

Proceedings Volume 12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII; 1241103 (2023) https://doi.org/10.1117/12.2650497
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We developed a high-power femtosecond tunable light source with over 20 mW output and emission in the 1650-1900 nm region, which is the boundary region between near-infrared (NIR) and mid-infrared (MIR). The light source’s output power per unit wavelength and irradiation area are 10,000 times higher than general halogen lamps we tested. These unique features of the technology enable the spectral measurement of thick biological samples, which has been considered impossible using a lamp light source. In addition, the light source’s all-fiber system requires no vibration isolator, no clean room, and no optical axis adjustment. Using a simple optical measurement system, we demonstrated absorption measurements of pork lipids about 0.9 mm thick and confirmed the light source had sufficient output power to penetrate the sample. We also present application examples that can benefit from the light source’s high-power light intensity.

Conference Presentation

Citation Download Citation

Ryota Kakei, Makoto Nakano, Shigetoshi Okazaki, Norihiko Nishizawa, and Shin Kato "Soliton-pulse-based, wavelength-tunable femtosecond fiber laser light source for NIR 1650-1900 nm emission", Proc. SPIE 12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII, 1241103 (17 March 2023); https://doi.org/10.1117/12.2650497

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