Efficient continuous wave and broad tunable lasers with the Tm:GdScO 3 crystal

Qingsong Song , Ning Zhang , Jian Liu , Xinyu Qian , Chaoyi Zhang , Yanyan Xue , Yongguang Zhao , Xiaodong Xu , Kheirreddine Lebbou (1) , Jun Xu

1 iLM - LUMINESCENCE - iLM - Luminescence

The spectroscopic properties and tunable laser performances of the orthorhombic perovskite Tm:GdScO 3 crystal grown by the Czochralski method are comparatively studied for polarization along different crystallographic axes. The polarized emission spectrum of Tm:GdScO 3 along the b -axis exhibits, to the best of our knowledge, the broadest bandwidth among all the single Tm 3+ -doped bulk gain media, indicating the strong inhomogeneous line broadening of Tm 3+ ions in GdScO 3 and thus leads to a broad and smooth gain spectrum. Tunable laser operation with a tuning range as broad as 321 nm from 1824 nm to 2145 nm is achieved, which indicates its potential for few-optical-cycle pulse generation in the 2-µm spectral range.

Domaines: Physique [physics]

Qingsong Song, Ning Zhang, Jian Liu, Xinyu Qian, Chaoyi Zhang, et al.. Efficient continuous wave and broad tunable lasers with the Tm:GdScO 3 crystal. Optics Letters, 2023, 48 (3), pp.640-643. ⟨10.1364/OL.481997⟩. ⟨hal-04298289⟩