you will want to check up on
the Center for Devices and Radiological Health, a department within the FDA.
Laws we should read:
U.S. FDA/CDRH: 21 CFR
1040.10/
11
- .10 covers Standards, .11 covers types of Lasers
U.S.C. TITLE 18, CHAPTER 2
- Sec 39A addresses pointing at airplanes
Thats about it for Federal Laws. Different states have different state laws. Mostly the state laws merely criminalize pointing lasers at Peace officers or police or emergency vehicles.
Illinois, on the other hand, has a lot of Laser related laws, one of which is the requirement that all Class IIIb and IV Lasers be registered.
The town of Ocean city in New Jersey bans the possession of Laser Pointers over 1mW.
Virginia Beach, VA has it a misdemeanor to aim a laser at a persons eyes.
Most of us will only need to really check out the Federal Laws however, as we wouldn't do any of those things anyway.
EDIT: Note, 21 CFR 1040.11/11 only cover completed laser products, not components designated for implementation into a product of your own design.
EDIT#2: Government definition of Laser Pointer:
(b) LASER POINTER DEFINED -- As used in this section, the term `laser pointer' means any device designed or used to amplify electromagnetic radiation by stimulated emission that emits a beam designed to be used by the operator as a pointer or highlighter to indicate, mark, or identify a specific position, place, item, or object.
EDIT#3: Good to know. Under U.S.C. Title 18, Section 2, 39A.
(c) EXCEPTIONS -- This section does not prohibit aiming a beam of a laser pointer at an aircraft, or the flight path of such an aircraft, by--
(3) by an individual using a laser emergency signaling device to send an emergency distress signal.
So if you get stranded you can use a laser to signal for help without fear of prosecution.