Copy sensor_msgs::LaserScanPtr& from callback function

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I have a local class member that I have defined as follows

sensor_msgs::LaserScan *current_scan_ = new sensor_msgs::LaserScan;

I also have a callback function which is called when a new laser scan is available on a /scan topic:

void CallbackHandler::getCurLaserScan(const sensor_msgs::LaserScanConstPtr& laser_in)

The question is, how can I assign a LaserScanConstPtr& object to a LaserScan* object? Is this assignment even possible? What is the advised way in manipulating incoming laser scans from the function?

The purpose of this, is to have a LaserScan object on the heap with the most recent laser scan contents.

Thanks in advance,