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McDONNELL DOUGLAS DEVELOPS A MEDICAL LASER

 McDONNELL DOUGLAS DEVELOPS A MEDICAL LASER
 McLEAN, Va., May 13 /PRNewswire/ -- McDonnell Douglas Electronic


Systems Co. has developed a five-watt laser ideally suited for medical applications. The announcement was made today at the 12th annual meeting of the American Society for Laser Medicine and Surgery being held in Orlando, Fla., May 17-19.
 The company's new gallium arsenide laser diodes can produce more than five watts of power. These micron-sized devices exhibit power conversion efficiencies of 58 percent and can operate with alkaline batteries. In addition, they are insensitive to the effects of electromagnetic interference and have a high tolerance to radiation. The output beams can be focused with lenses or coupled to fiber optics. The complete package, including drive electronics, can be as small as one square inch and can be hermetically sealed. These advantages make the McDonnell Douglas devices ideal for medical applications.
 "The benefits of laser diodes, compared to solid state and gas lasers, include the lower risk of direct laser energy because these lasers are power limited and simple to operate. In addition, they are portable, compact in size and highly cost competitive," said Barbara Soltz, director of microlasers for McDonnell Douglas Electronic Systems.
 These tiny devices use only current to control power so that, with electrical inhibits as part of the control circuitry, the laser exhibits a high degree of safety. Screening and life tests, similar to those designed for McDonnell Douglas' space-based lasers, will be used to achieve a warrantable life. Finally, these devices, which are semiconductor chips, are produced using processes similar to those used in the manufacture of silicon chips. McDonnell Douglas expects that as the number of devices produced increases, the cost of the devices will drop dramatically, similar to the reduction in cost that has occurred in the silicon industry.
 -0- 5/13/92
 /CONTACT: Karolyn Wolf McDonnell Douglas Electronic Systems,


703-883-3825/
 (MD) CO: McDonnell Douglas Electronic Systems ST: Virginia IN: MTC HEA SU: PDT


DM -- LA033 -- 9895 05/13/92 16:36 EDT
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Publication:PR Newswire
Date:May 13, 1992
Words:333
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