A laser diode, also known as an injection laser or diode laser, is a semiconductor device that produces coherent radiation (in which the waves are all at the same frequency and phase) in the visible or infrared (IR) spectrum when current passes through it.
This article is about the city in Jay County. For the city in Fountain County formerly named Portland, see Fountain, Indiana. Portland is a city in and the county seat of Jay County, Indiana, United States. The population was 6,223 at the 2010 census.
Population of Portland, OR. Last official estimated population of Portland city (Clackamas County**, Oregon state) was 619,360 (year 2014)[1]. This was 0.194% of total US population and 15.37% of total Oregon state population. Area of Portland city is 145.1 miÂ² (=375.8 kmÂ²)[6], in this year population density was 4,268.36 p/miÂ². If population growth rate would be same as in period 2010-2014 (+1.49%/yr), Portland city population in 2017 would be 647,464*.