Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Laser

Innovative Technique for Meeting Laser Tracking Criteria at Near and Far Ranges

Nahla A. AL Jabbar; Hisham A. Maliek; Dhafir Aziz Dhadir

Engineering and Technology Journal, 2015, Volume 33, Issue 5, Pages 932-937

Designing Laser Detection and Tracking System (LDTS) needs meeting some certain requirements, one of these requirements is meeting tracking criteria for quadrant photodetector (QPD) at near and far detection range for the target in question through simulating these requirements. A reflecting truncated tetrahedral prism technique design and four separate photodetectors of certain shapes are introduced as a method to avoid tracking failure case.

A Study On The Effect of Using Various Reflectivities of Output Couplers on CW Carbon Dioxide Laser Performance

Engineering and Technology Journal, 2007, Volume 25, Issue 10, Pages 333-336

A practical study has been carried out on axial flow CW CO2 laser by
changing the output coupler with a wide range of reflectivities. ZnSe mirrors
were used in various reflectivities (20, 30, 40, 45, 50, 55, 60, 65, 70,75,80,85,90).
It has been found that the output power varies considerably with varies the
reflectivity of the output coupler. Thus the optimum reflectivity for 1m
optical length and 1cm discharge tube of CW CO2 laser is found to be 65±
5%. Our results have been compared with other published data.