激光原理與激光器ppt課件-wenkub
2023-05-20 02:06:09 本頁面
【正文】 SEL array: vertical cavity surface emitting laser (850 nm) Ti:Sapphire laser: ultrashort pulses (30 fs) (7001000 nm) Fermi: 1015 Pieter: 1012 Nanometer: 109 Optical Electronics, Fall 2022 Laser characteristics II Threshold kink in output power spectral narrowing 線寬壓縮（線寬變窄） 扭結(jié)、彎曲 Optical Electronics, Fall 2022 Laser history 1910 1920 1930 1940 1950 1960 1970 1980 1990 2022 Einstein predicts stimulated emission Townes invents and builds first MASER Schawlow and Townes propose LASER Maiman builds first (ruby) LASER Javan invents HeNe laser Faist builds quantum cascade laser Nakamura builds blue laser diode nanowire laser built at UCB Alferov builds first heterostructure laser CD player IBM builds first laser printer Hall builds semiconductor laser Spectra introduces Ti:Sapphire laser first fiber optic munication system (Chicago) Optical Electronics, Fall 2022 Lasers in science laser cooling and trapping interferometry length measurements biological processes ultrafast phenomena Optical Electronics, Fall 2022 Lasers in medicine corrective eye surgery removing blemishes gallbladder surgery using fiber optics Optical Electronics, Fall 2022 Lasers in every day life barcode scanners laser printers ? laser cutting ? laser welding ? .... CD players Optical Electronics, Fall 2022 電吸收分布反饋 Lasers in munication systems 4 PIN receivers 160 km standard fibre booster amplifier 4 WDM EADFB lasers preamplifier attenuator and power meter optical spectrum analyser channel separation: 100 GHz ( nm) D E M U X laser as source laser as amplifier PINdiode PINdiode Input 1550 Monitor tap Isolator 980/1550 coupler Er fibre Isolator Monitor tap Output 980 nm pump laser 光功率放大器 DeMultiplexer 分路器 Wavelength Division Multiplexer 波分復(fù)用系統(tǒng) 前置放大器 Erbiumdoped Optical Fiber Amplifer 摻鉺光纖放大器 PositiveInstincive Negative 光電轉(zhuǎn)換 隔離器 隔離器 耦合器 Optical Electronics, Fall 2022 Energy Lever of Er3+ 980 nm 1550 nm 1550 nm 1550 nm 1550 nm Optical Electronics, Fall 2022 Chapter 7 Some Specific Laser Systems Solid laser Gas laser Excimer laser （激基分子激光器） Semiconductor laser Ruby Laser Nd3+:YAG Laser NeodymiumGlass Laser HeNe Laser CO2 Laser
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