The only raw HD format I know of is Sony's RED (.r3d) format. Sony Vegas Pro 9 is able to open this, but I doubt that it is able to save. Remember that the higher resolution = more raw data, and more raw data, in your case, would be extremely massive. In the case of DV-AVI, if it could do High-Def (whcih it cannot), the files would be massive, as everyone talks about DV-AVI as being a near to raw format - not quite, but it's like a bunch of JPEGs instead of the motion-compression technique used by MPEG-2, MPEG-4/AVC, and a number of other formats.
My Panasonic HDC-TM700 can shoot 1920x1080/60p video in MP4 (AVCHD) format. 1920 x 1080 x 60 = 124,416,000 bits per second - that's about 15.5 MB/sec. Just imagine, a thirty minute lecture would take 108 GB.