It is, therefore, a primary object of the present invention to provide a pickup apparatus and method for controlling a tracking and focusing servo in a holographic storage system, capable of tracking and focusing a laser beam on {TAIL ~ a target track} of {HEAD ~ a holographic medium} 
It is , therefore , a primary object of the present invention to provide a pickup apparatus and method for controlling a tracking and focusing servo in a holographic storage system , capable of tracking and focusing a laser beam on { TAIL ~ a target track } of { HEAD ~ a holographic medium }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD