It should be possible to import .las files (LIDAR data exchange) to ArcGIS and export it, or at least some of the data as .adf files (coverage data). No further information regarding specifics about this conversion could be found, however ArcGIS can definitely import .las files.
Convert LIDAR data exchange file to ArcView ARC/INFO coverage data.
We found one software available in the database for this conversion.
Microsoft Windows software - convert las to adf on Windows
A group of GIS (geographic information system) applications
Convert from las file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.