Also in the news . . .

Digital Optics Corp. (Charlotte NC) received a Phase II SBIR contract worth $375,000 from ARPA and the US Army Missile Command to develo¥hybrid diffractive and refractive optics for headmounted displays. . . . REOSC is moving its departments located in Ballainvillier, France, to a 6000m2 space in Saint Pierre du Perray, France, where the company has a largemirror polishing workshop. . . . Melles Griot Optics (Rochester, NY) has added a coating laboratory that includes ionassisted coating cha

Jan. 1, 1995

MOCVD makes multiplewavelength 2D array of verticalcavity lasers, which would be useful for wavelengthdivisionmultiplexing communications systems, according to K. Iga and others at Tokyo Institute of Technology (Yokohama, Japan). Metalorganic chemicalvapor deposition (MOCVD) was used to create an array of GaInAs/GaAs verticalcavity surfaceemitting lasers (VCSELs) with center wavelengths varying by u¥to 45 nm. The researchers grew the lasers on a substrate patterned with mesas of varying diameters. The wavelength of each laser was controlled by the mesa diameter. Current threshold of the devices was as low as 3 mA and voltage threshold was as low as 2.5 V. (Electron. Lett. 30(23), 10 Nov. 1994, p. 1947)