Raptor Photonics announced that Liam Mulholland has joined the company as general manager. Mulholland will be responsible for managing all day-to-day business activities and implementing effective business strategies. He has previously held leadership positions at Stryker and Caterpillar. Liam Mulholland. Courtesy of Raptor Photonics. Raptor Photonics is a manufacturer and designer of low-light digital cameras for scientific and industrial applications.