Using thermal rather than photodiode detector, 100 W Model F100A-IS achieves high degree of spectral flatness and won''t saturate, even at full-rated power. Two fiber ports measure additional parameters such as wavelength and temporal profile. Input is equipped for optional fiber input, and SMA fiber adapters are also available. Integrating sphere head boasts 16 mm aperture, 0.2-2.5 µm spectral range, 2-100 W power range, ±5% power accuracy, and response of 1.5 sec with display.