We demonstrate the high-power laser performance with a disordered crystal at a wavelength of about . Continuous-wave output power of is achieved with a laser diode as the pump source. For the first time to our knowledge, the passively Q-switched laser is obtained with the maximum average output power of , shortest pulse width of , and highest peak power of . By spectral analysis, the laser wavelength is centered at about . We propose that, by suitable tuning, the laser should be an excellent source for helium optical pumping.
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