Title :
Eye safe laser radar using a microchip laser, 2-dimensional InGaAs/InP photodiode arrays and the bi-axial optical lens system
Author :
Nam, Eun Soo ; Oh, M.S. ; Kim, H.Y. ; Chong, Y.J.
Author_Institution :
RF & Opt. Devices Res. Dept., Electron. & Telecommun. Res. Inst., Daejeon
Abstract :
We have developed a high-resolution, direct detection imaging ladar using a microchip laser and the 32times32 two dimensional InGaAs/InP pin photodiode array. With microchip lasers and compact microelectronic arrays of detectors and timing circuitry, we can fabricate a imaging laser radar small enough to be portable. The microchip laser employed in this lidar utilizes 1.55 mum InGaAsP/InP high power laser diode. The 32 times 32 InGaAs/InP PIN diode array offers robust, solid-state, good sensitivity. In the near future, InGaAs/InP APD having a larger arrays of 128 times 128 pixels and lenslet array will be developed which allows for the capture of entire 3-D images on a single laser pulse at high frame rates. The effort for the development of these detector and laser technologies will lead to 3-D imaging systems with higher spatial resolution at longer ranges in compact packages.
Keywords :
III-V semiconductors; avalanche photodiodes; gallium arsenide; indium compounds; microchip lasers; optical radar; p-i-n photodiodes; semiconductor lasers; 2-dimensional photodiode arrays; InGaAs-InP; PIN diode array; bi-axial optical lens system; compact microelectronic arrays; direct detection imaging ladar; eye safe laser radar; high power laser diode; microchip laser; timing circuitry; wavelength 1.55 mum; High-resolution imaging; Indium gallium arsenide; Indium phosphide; Laser radar; Lenses; Microchip lasers; Optical arrays; Optical imaging; Photodiodes; Semiconductor laser arrays;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4957915