28 August 2015 Last updated at 14:08 BST
The device was able to track and damage a free-flying drone during the trial in California.
Boeing is one of many companies working to develop high powered lasers that can be used in military or defence scenarios.
The company says its new device is the most portable yet, and can be collapsed into four parts light enough to carry.

Thomas Baker, known as Tommy, was found badly injured at Stanley Meat Market in the Old Swan area of Liverpool on 27 January.
The 44-year-old, from Everton, had been shot in the head and chest. He died later in hospital.
The three Liverpool men arrested - two aged 29 and the other 32 - remain in police custody for questioning.
Merseyside Police said Mr Baker had left Phoenix Gym at the market shortly before he was shot while getting into his car.
Detectives believe those involved in the shooting had been waiting outside the gym for about an hour.
Det Ch Insp Bev Hyland said officers were still searching for a silver VW polo, which "left the scene at speed" and travelled along a number of roads including Balmoral Road, Molyneux Road and Queens Road.
She added that a number of people captured on CCTV near the meat market had yet to come forward and while "they may not think what they saw would be of any significance, they could have information which is key to our inquiries".
Boeing has successfully shot a drone out of the sky using a high-powered laser during a test, the company says.
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Three men have been arrested on suspicion of murder over the shooting of a man at a meat market.