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1、2018/9/14,Optoelectronics Introduction,1,Prof. Xu Liu and Prof. Haifeng Li Course assistant: Hen WangCollege of Optical Science and Engineering Zhejiang University,Optoelectronics 光电子学,http:/ Introduction,2,What is Optoelectronics?,2018/9/14,Optoelectronics Introduction,3,A field of technology that
2、combines the physics of light with electricity. Optoelectronics encompasses the study, design and manufacture of hardware devices that convert electrical signals into photon signals and vice versa. Any device that operates as an electrical-to-optical or optical-to-electrical transducer is considered
3、 an optoelectronic device. Optoelectronic technologies include fiber optic communications, laser systems, electric eyes, and are widely used in the daily household appliances, office electronics, lighting, remote sensing systems, medical diagnostic systems and optical information systems.,2018/9/14,
4、Optoelectronics Introduction,4,Different point of views,Optoelectronics is a branch of electronics that overlaps with physics. The field concerns the theory, design, manufacture, and operation of hardware that converts electrical signals to visible or infrared radiation (infrared) energy, or vice-ve
5、rsa.Optoelectronics is the branch of physics that studies the mutual conversion of electricity and light energy.,2018/9/14,Optoelectronics Introduction,5,Optoelectronics (contents),Laser theory and techniques Semiconductor light device Photodetectors Modulation (electro-optics effect, Photoacoustic
6、effect, Magnetoptics effect) Display Nonlinear optics,2018/9/14,Optoelectronics Introduction,6,Including,Optoelectronic components for example: photocells, solar cells, detector arrays,opto-isolators (also called optical couplers or optocouplers), modulator, LEDs (light-emitting diodes), laser, and
7、laser diodes. Applications include light sources, electric eyes, photovoltaic power supplies, various monitoring and control circuits, and optical fiber communications systems, display, information storage.,2018/9/14,Optoelectronics Introduction,7,Optoelectronics,Electrics,Photons,2018/9/14,Optoelec
8、tronics Introduction,8,laser sources semiconductor Photodetector Electro-optical effect Acoustic optics, magnetic optics non-linear effect,EPhotonEPhotonEgEPhotonEgN ENPhonon, NBNI3, I2,Different relations between photon and other physical parameters：,2018/9/14,Optoelectronics Introduction,9,Lumines
9、cent spectrum of different materials,2018/9/14,Optoelectronics Introduction,10,Laser theory is the basic part of Optoelectronics,2018/9/14,Optoelectronics Introduction,11,History of Laser,LASER Light Amplification by Stimulated Emission of Radiation 1917 Albert Einstein first theorized about the pro
10、cess which makes lasers possible called “Stimulated Emission“ 1951 Charles H. Townes conceived the concept of MASER (Microwave Amplification by Stimulated Emission of Radiation) 1954 First MASER device by Townes, Gould and Zerger 1958 Schawlow and Townes showed theoretically that masers could be mad
11、e to operate in the optical and infrared region “Infrared and Optical Masers,“ published in the December 1958 Physical Review. Received a patent for the invention of the laser in 1960,Arthur L. Schawlow,Charles H. Townes,Albert Einstein,2018/9/14,Optoelectronics Introduction,12,Charles Townes (left)
12、 and James P. Gordon proudly display their maser, a device that greatly amplifies microwaves,2018/9/14,Optoelectronics Introduction,13,History of Lasers,Laser Patent War Gordon Gould then 37-year-old Columbia graduate student - wrote down his laser ideas - including a definition of “laser“ as Light
13、Amplification by the Stimulated Emission of Radiation - in late 1957, and had them notarized. Filed for patent in 1959, but was rejected. The laser patent was later bitterly disputed for almost three decades in “the patent wars” by Gordon Gould, and his designated agents. Gordon Gould eventually rec
14、eived the US patent for optical pumping of the laser in 1977 since the original laser patent did not detail such a pumping procedure. In 1987 he also received a patent for the gas discharge laser, thereby winning his 30 year patent war. His original notebook even contained the word “laser”,Gordon Go
15、uld,2018/9/14,Optoelectronics Introduction,14,History of Lasers (Contd),1960 Theodore H. Maiman (Hughes Research) made the first working laser Ruby laser 0.69 mm,The first Ruby laser in the world,Theodore H. Maiman,2018/9/14,Optoelectronics Introduction,15,Ali Javan and his associates William Bennet
16、t Jr. and Donald Herriott at Bell Labs were first to successfully demonstrate a continuous wave (cw) helium-neon laser operation (1960-1962). (Courtesy of Bell Labs, Lucent Technologies.),2018/9/14,Optoelectronics Introduction,16,In 1962 Robert Hall invented the semiconductor injection laser, a device now used in all compact disk players and laser printers, and most optical fiber communications systems.,
