Calmar Laser Inc. has added an ultracompact high-power 780-nm femtosecond fiber laser to its Mendocino family. Model FPL-05RFF0 offers 500 mW of output power and a pulse width of 150 fs in a 3 x 3 x 13.5-cm package. It provides a 50-mHz train of femtosecond pulses that have a near-pedestal-free shape and high pulse-to-pulse stability. The output beam has roundness better than 90% and M2 <1.1, enabling optimal spatial resolution when used in conjunction with microscope systems. Completely air-cooled, the laser is designed for OEM and scientific biophotonic applications, including multiphoton microscopy and biomedical imaging. The new model is nearly 300 times smaller than comparable power femtosecond Ti:sapphire laser systems, according to the company.