Crystal growth and properties of the disordered crystal Yb:SrLaAlO4: a promising candidate for high-power ultrashort pulse lasers. Issue 24 (31st May 2018)

• Record Type: Journal Article
• Authors: Pan, Zhongben; Dai, Xiaojun; Lei, Yuanhua; Cai, Huaqiang; Serres, Josep Maria; Aguiló, Magdalena; Díaz, Francesc; Ma, Jie; Tang, Dingyuan; Vilejshikova, Elena; Griebner, Uwe; Petrov, Valentin; Loiko, Pavel; Mateos, Xavier
• Is Part Of: CrystEngComm. Volume 20:Issue 24(2018)
• Page Start: 3388
• Page End: 3395
• Publication Date: 2018-05-31
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c8ce00540k
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : A high quality Yb 3+ -doped strontium lanthanum aluminate crystal, Yb:SrLaAlO4 is grown by the Czochralski method. Abstract : A high quality Yb 3+ -doped strontium lanthanum aluminate crystal, Yb:SrLaAlO4 (Yb:SLA) is grown by the Czochralski method. It is tetragonal (sp. gr. I 4/ mmm, a = b = 3.7536 Å, c = 12.6253 Å). Room- and low-temperature spectroscopy of Yb 3+ ions in this crystal are studied. The Stark splitting is resolved. Absorption, stimulated-emission (SE) and gain cross-sections are determined with polarized light. In the spectral range of laser emission, the maximum σ SE is 0.57 × 10 −20 cm 2 at 1047 nm for σ polarization. The polarized Raman spectra of Yb:SLA are presented. Thermal properties of Yb:SLA are characterized in terms of the linear thermal expansion, specific heat and thermal conductivity. The latter is as high as 6.06 and 4.30 W m −1 K −1 along the a - and c -axes, respectively (at room temperature). Broadband tuning of a continuous-wave (CW) Yb:SLA laser, from 1011 to 1082 nm has been achieved. Due to its good thermal properties, broad and smooth gain spectra, Yb:LSA is a promising material for power-scalable, broadly tunable CW and sub-100 fs mode-locked lasers at ∼1 μm.