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Report No.

Sub-picosecond regenerative amplifier of Yb-doped Y$$_{2}$$O$$_{3}$$ ceramic thin disk

Maruyama, Momoko; Okada, Hajime; Ochi, Yoshihiro; Nagashima, Keisuke

We have developed a 1 kHz regenerative amplifier using an Yb:Y$$_{2}$$O$$_{3}$$ ceramic thin disk as the gain medium. Furthermore, the thermal conductivity and heat generation property of Yb: Y$$_{2}$$O$$_{3}$$ ceramic were investigated. In the developed regenerative amplifier, a laser beam is bounced off the thin disk six times in each round trip. The output energy is over 2 mJ, spectral bandwidth is 1.8 nm at FWHM, and pulse duration after pulse compression is 0.9 ps.



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