Kerr-lens mode-locked 49-fs Tm<sup>3+</sup>:YScO<sub>3</sub> single-crystal laser at 2.1 µm
Anna Suzuki, Sascha Kalusniak, Steffen Ganschow, Christian Kränkel, Masaki Tokurakawa
Abstract
We report on a continuous wave (CW) and Kerr-lens mode-locked (KLM) Tm 3+ :YScO 3 single-crystal laser centered at 2.1 µm. Efficient CW laser operation with a maximum slope efficiency of 51% was achieved under in-band pumping by an Er:Yb fiber master oscillator power amplifier (MOPA). In KLM operation, pulses as short as 49 fs corresponding to seven optical cycles were achieved at a repetition rate of 96.7 MHz with an average output power of 126 mW. Such short pulse durations are enabled by the inhomogeneously broadened emission spectrum of Tm 3+ :YScO 3 extending to above 2200 nm.
Topics & Concepts
OpticsLaserMaterials scienceAmplifierSlope efficiencyFiber laserLens (geology)Continuous waveMode-lockingOptoelectronicsPhysicsCMOSSolid State Laser TechnologiesAdvanced Fiber Laser TechnologiesPhotonic Crystal and Fiber Optics