Diode-pumped Tm³⁺-doped sesquioxide lasers for ultrashort pulse applications in the 2μm region

Stevenson, N. K.

doi:10.17630/10023-19629

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Optical Absorption and Judd-ofelt Analysis1

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2023

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“…represents the absorption coefficient, represents the calculated average wavelength, h is the Planck constant, c is the light speed, e is the electron charge, and n is the refractive index. The refractive index of the host crystals throughout this range can be calculated using the respective Sellmeier equation [30]. For this work, the constants in the equation were estimated using the reported refractive index data of GdScO 3 [31], resulting in the following equation:…”

Section: Optical Absorption and Judd-ofelt Analysismentioning

confidence: 99%

Efficient continuous wave and broad tunable lasers with the Tm:GdScO₃ crystal

Song¹,

Zhang²,

Liu³

et al. 2023

Opt. Lett.

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The spectroscopic properties and tunable laser performances of the orthorhombic perovskite Tm:GdScO3 crystal grown by the Czochralski method are comparatively studied for polarization along different crystallographic axes. The polarized emission spectrum of Tm:GdScO3 along the b-axis exhibits, to the best of our knowledge, the broadest bandwidth among all the single Tm3+-doped bulk gain media, indicating the strong inhomogeneous line broadening of Tm3+ ions in GdScO3 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.

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Section: Optical Absorption and Judd-ofelt Analysismentioning

confidence: 99%