Video shows the man wearing a gas mask and a child's backpack pointing a laser and hiding behind a tree.
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It happened in Lower Manhattan on Saturday.
Police say the incident created substantial risk for those inside the helicopter.
Ultimately, no one was hurt.
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If you recognize the suspect, you are asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
You can also submit tips by visiting the CrimeStoppers website at crimestoppers.nypdonline.org or by messaging on Twitter @NYPDTips.
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