High-energy, nanosecond pulsed Cr:CdSe laser with a 2.25-3.08 μm tuning range for laser biomaterial processing

Masaki Yumoto; Norihito Saito; Taichen Lin; Rie Kawamura; Akira Aoki; Yuichi Izumi; Satoshi Wada

doi:10.1364/BOE.9.005645

High-energy, nanosecond pulsed Cr:CdSe laser with a 2.25-3.08 μm tuning range for laser biomaterial processing

Biomed Opt Express. 2018 Oct 22;9(11):5645-5653. doi: 10.1364/BOE.9.005645. eCollection 2018 Nov 1.

Authors

Masaki Yumoto¹, Norihito Saito¹, Taichen Lin^{2

3}, Rie Kawamura⁴, Akira Aoki⁴, Yuichi Izumi⁴, Satoshi Wada¹

Affiliations

¹ Photonics Control Technology Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
² Department of Dentistry, Chung Shan Medical University Hospital, No. 110, Section 1, Jianguo N. Rd., Taichung 40201, Taiwan.
³ School of Dentistry, Chung Shan Medical University, No. 110, Section 1, Jianguo N. Rd., Taichung 40201, Taiwan.
⁴ Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.

Abstract

We have developed a mid-infrared (mid-IR) tunable Cr:CdSe laser with nanosecond pulse operation. A broad tuning range from 2.25 to 3.08 µm and an output energy exceeding 4 mJ at 2.64 μm were demonstrated. The maximum energy conversion for absorbed energy reached 35% when the pump fluence was 2.1 J/cm². We showed that Cr:CdSe is an attractive laser material for obtaining high-energy pulses in the mid-IR region and that the Cr:CdSe laser has high potential for laser biomaterial processing.