[8p-N402-1~16] CS.3 Code-sharing Session of 3.5&3.7

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[8p-N402-12] Narrowband Mode-Locked Cr:ZnS Laser with Electrical Wavelength Control

〇(P)Zhang Zheyuan¹, Ikki Morichika¹, Satoshi Ashihara¹ (1.Tokyo Univ. IIS)

Keywords:

mode-locked laser,wavelength-tunable laser,mid-infrared laser

We report the first demonstration of electrical wavelength control in a Cr:ZnS laser using an electro-optic (EO) modulator. By solely adjusting the modulation frequency of the modulator, the output wavelength can be tuned over a broad range. In this proof-of-concept experiment, a tuning range of 60 nm was achieved by varying the modulation frequency by 300 kHz. As the modulation frequency is tuned from 92.05 MHz to 92.35 MHz, the central output wavelength shifts from 2211 nm to 2151 nm. The average spectral width of laser is 0.3-0.4 nm. This demonstration of the electrically controlled, wavelength-tunable, mode-locked Cr:ZnS laser in the 2-3 µm mid-infrared region represents a significant advance toward rapid, programmable wavelength control. This approach provides a powerful platform for applications such as high-speed, high-sensitivity spectroscopy and agile-wavelength LiDAR systems.