The AvaLight-DH-S-BAL is almost identical to the AvaLight-DH-S. The AvaLight-DH-S-BAL uses a dichroic filter to drastically reduce the dominant alpha peak at 656 nm. Although the overall light output is lower, the dynamic range is 20 times higher than that of the AvaLight-DH-S.
The focus of the built-in collimator can be adjusted to the numerical aperture of the connected fiber. The built-in TTL shutter allows the dark current of the used Avantes spectrometer to be adjusted in combination with the AvaSoft.