Sub-100-fs Kerr-lens mode-locked Yb:Lu2O3 laser with more than 60% optical efficiency

Xiancui Su, Yiran Wang, Yanru Yin, Mengmeng Wang, Bingyuan Zhang, Jingliang He, Baitao Zhang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Yb-doped sesquioxides represent one of the most excellent laser crystals applying for high-power ultrafast lasers owing to their very high thermal conductivities and broadband emission spectra. Pumped by a high-brightness Yb-fiber laser at 976 nm, the Yb:Lu2O3 laser delivers a maximum output power that amounts to 3.55 W in the continuous-wave regime with an optical efficiency of 75%. In the mode-locked regime, 90-fs pulses were generated via soft-aperture Kerr-lens mode-locking at 1080.6 nm with an average output power of 2.85 W, which corresponds to an optical efficiency of 60.3% and a slope efficiency of 68.8%. Average output power of the mode-locked Yb:Lu2O3 laser can be further scaled to 3.05 W at the expense of the pulse duration (178 fs), which corresponds to an optical efficiency as high as 64.5%. To the best of our knowledge, it is the highest optical efficiency ever reported from any solid-state Kerr-lens mode-locked Yb lasers.

Original languageEnglish
Pages (from-to)145-148
Number of pages4
JournalOptics Letters
Volume49
Issue number1
DOIs
Publication statusPublished - 1 Jan 2024
Externally publishedYes

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