论文信息 - Disordered garnets Ca3(Nb, Ga)5O12:Nd3+- prospective crystals for powerful ultrashort-pulse generation.

Disordered garnets Ca3(Nb, Ga)5O12:Nd3+- prospective crystals for powerful ultrashort-pulse generation.

Disordered garnets Ca3(Nb, Ca)5O12:Nd3+ grown by the Czochralski method are used in a pulsed picosecond laser to generate 5–10-ps pulses in passive mode-locking trains of 120–180 ns and 1.6 mJ of energy at 1.06 μm. The evolution of the pulse parameters along the train is investigated. Direct time-resolved measurements allow us to determine the positive linear chirp of the laser frequency, which causes the pulse spectral broadening of Δν = 50–60 cm−1. The chirped pulses are compressed in the external grating compressor. The measured pulse duration of 2 ps is limited by the time resolution of the streak camera.

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