Femtosecond Yb:YGAG ceramic slab regenerative amplifier

0492547 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Huynh, Jaroslav - Smrž, Martin - Miura, Taisuke - Slezák, Ondřej - Vojna, David - Čech, M. - Endo, Akira - Mocek, Tomáš
Femtosecond Yb:YGAG ceramic slab regenerative amplifier.
Optical Materials Express. Roč. 8, č. 3 (2018), s. 615-621. ISSN 2159-3930
Grant CEP: GA MŠMT LO1602; GA ČR GA16-12960S; GA MŠMT EF15_006/0000674; GA MŠMT LM2015086
GRANT EU: European Commission(XE) 739573 - HiLASE CoE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: laser amplifiers * laser materials * laser, ytterbium
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.673, rok: 2018

We present a femtosecond regenerative Yb:YGAG (Y3Ga2Al3O12) ceramic slab amplifier delivering 405 fs pulses at a wavelength of 1030 nm with a bandwidth limit of 306 fs, 1.1 W of average power, 8 mu J of pulse energy, and a repetition rate of 100 kHz. The amplifier is seeded by 9 pJ pulses generated by a Yb-doped fiber ring oscillator with extracavity spectral shaping to minimize gain narrowing. The net-gain of the pulses is 60 dB, the spectral bandwidth is 4.1 nm (FWHM), and the M-2 beam quality factor is < 1.2. Due to similar optical and thermo-mechanical properties to Yb:YAG, the Yb:YGAG gain medium is a promising alternative for upgrading the existing Yb:YAG picosecond disk amplifiers to the femtosecond regime.
Trvalý link: http://hdl.handle.net/11104/0286035