DSQC 509 ABB 3HAC5687-1/7 光和激光器激光是20世紀60年代出現的最重大的科學技術成就之一。它發(fā)展迅速已廣泛應用于國防、生產、醫(yī)學和非電測量等各方面。激光與普通光不同，需要用激光器產生。激光器的工作物質，在正常狀態(tài)下，多數原子處于穩(wěn)定的低能級E1,在適當頻率的外界光線的作用下，處于低能級的原子吸收光子能量受激發(fā)而躍遷到高能級E2。光子能量E=E2-E1=hv，式中h為普朗克常數，v為光子頻率。反之，在頻率為v的光的誘發(fā)下，處于能級E2的原子會躍遷到低能級釋放能量而發(fā)光，稱為受激輻射。激光器首先使工作物質的原子反常地多數處于高能級（即粒子數反轉分布），就能使受激輻射過程占優(yōu)勢，從而使頻率為v的誘發(fā)光得到增強,并可通過平行的反射鏡形成雪崩式的放大作用而產生強大的受激輻射光，簡稱激光。
激光具有3個重要特性:
①高方向性（即高定向性，光速發(fā)散角小），激光束在幾公里外的擴展范圍不過幾厘米；
②高單色性，激光的頻率寬度比普通光小10倍以上；
③高亮度，利用激光束會聚可產生達幾百萬度的溫度。
激光器按工作物質可分為4種：
①固體激光器：它的工作物質是固體。常用的有紅寶石激光器、摻釹的釔鋁石榴石激光器(即YAG激光器)和釹玻璃激光器等。它們的結構大致相同，特點是小而堅固、功率高，釹玻璃激光器是目前脈沖輸出功率的器件，已達到數十兆瓦。
②氣體激光器：它的工作物質為氣體。現已有各種氣體原子、離子、金屬蒸氣、氣體分子激光器。常用的有二氧化碳激光器、氦氖激光器和一氧化碳激光器，其形狀如普通放電管，特點是輸出穩(wěn)定，單色性好,壽命長,但功率較小，轉換效率較低。
③液體激光器:它又可分為螯合物激光器、無機液體激光器和有機染料激光器，其中最重要的是有機染料激光器，它的特點是波長連續(xù)可調。
④半導體激光器：它是較年輕的一種激光器，其中較成熟的是砷化鎵激光器。特點是效率高、體積小、重量輕、結構簡單，適宜于在飛機、軍艦、上以及步兵隨身攜帶。可制成測距儀和瞄準器。但輸出功率較小、定向性較差、受環(huán)境溫度影響較大。
DSQC 509 ABB 3HAC5687-1/7
Leybold Sogevac SV 16 vacuum pump
Leybold D4A Refurbished Vacuum Pump
LEYBOLD TURBOTRONIK NT 1000/1500 TURBO PUMP CONTROLLER
LEYBOLD VISCOVAC VM212
Leybold D10E Vacuum Pump - 12 Month Warranty
LEYBOLD PUMP D60AC Repair/Exchange
LEYBOLD TURBOVAC 450 CF VACUUM PUMP
Leybold Trivac D8B Vacuum Pump Rotary Two Stage
Inficon-Leybold Quadrex 200 RGA, PN: 901-002-G1
Leybold HeraeusTrivac D2A Vacuum Pump 89-8000 W
Leybold-Heraeus NIZ 2 Power Supply
Inficon Leybold-Heraeus 155-29 RGA Head
LEYBOLD HERAEUS SAMPLE LOCK DRIVE UNIT 86 29 14
Leybold-Heraeus Trivac D60AC Rotary Vane Vacuum Pump
Leybold Inficon Quadrex-200 SCU
Enlarge
Leybold Turbotronik NT150/360 Frequency Converter (Used
Leybold Cathode Ray Option Kit PTR225 CDN115 NEW
One-day shipping available
Leybold CMOVE 1250 Valve Pressure Mass Flow Controller
Electron Beam Grid CL167R Leybold Hamilton Gun Camlock
Electron Beam Grid CLR200R Leybold Hamilton Gun Camlock
Leybold EcoDryL Vacuum Pump 1.5 KW 12315 28cfm rebuildr
LEYBOLD ION PUMP IZ80 85125 NICE
Leybold Turbotronik NT 150/360 Turbo pump controler
LEYBOLD CABLE 702-212-G15 *NEW*
One-day shipping available
LEYBOLD 50B 50 B DRY PUMP
Varian 1000L/S Ion Vacuum Pump Leybold
Leybold Inficon Transpector XPR
2 Leybold-Heraeus INFICON 908-140-G1 CIS Controllers
One-day shipping available
Leybold Turbotronik NT 340 M Turbo Pump Controller MT
One-day shipping available
Leybold Turbotronik NT 340 MC/T Turbo Pump Controller M
One-day shipping available
Leybold Heraeus Quick-Test 89600-2 Sniffer 89600B2
One-day shipping available
Leybold NT150/360 Turbotronic Turbo Pump Controller
One-day shipping available
Trivac/Leybold D16E High Vacuum Pump
Leybold D2A Pump & GE 1/3 hp 5KC42HG892 motor
Oil Separator Filters fit Leybold SV.630 vacuum pump
Oil Separator Filters fit Leybold SV.630F vacuum pump
Oil Separator Filters fit Leybold SV.750 vacuum pump
Leybold Thermovac Vacuum Controller TM 22 TM22 89684
One-day shipping available
Leybold System Controller 307285-2003
Expedited shipping available
LEYBOLD TURBOTRONIK NT 1000/1500 TURBO PUMP CONTROLLER
LEYBOLD DRYVAC2 PUMPING SYSTEM
Ruvac Leybold Vacuum Blower Pump WA1000 89513-1
LEYBOLD TURBOVAC 1500C Turbomolecular Vacuum Pump
Leybold Flange Right Angle Vacuum Bellows Valve
LEYBOLD INFICON QUADREX-100 SCU 901-200-G5 019-101-G2
Leybold D2.5E Trivac Vacuum Rotary Vane Pump
Leybold-Heraeus Ultratest MS FB Helium Leak Detector
Leybold Turbotronik NT 1000/1500 Pump Controller AMAT
Leybold Turbotronik controller NT 340 M Turbo Pump
Leybold Heraeus IONIVAC IM210D
Leybold Heraeus NT 150/360 Turbomolecular Controller
USED LEYBOLD TRI-VAC VACUUM PUMP 72075040 D30A 1-1/2hp
Leybold TRIVAC D30A VACUUM PUMP, 26.8CFM 3PH 1.5HP
Leybold Heraeus Turbotronik NT 150/360 Controller
PCB, Power supply , Leybold Inficon P/N 19527
Leybold Heraeus D4 Roughing Pump, Hydrocarbon
Filter kit fits Leybold SV500 Vacuum Pump
Filter kit fits Leybold SV200B Vacuum Pump
LEYBOLD TRIVAC D16E Vacuum Pump
LEYBOLD NT150/360 TURBOTRONIK VACUUM PUMP 85472-1
LEYBOLD SYSTEM CONTROLLER 307285-2003
LEYBOLD TURBOTRONIK 150/360 TURBO PUMP CONTROLLER
Leybold WS1001/100P Dryvac Vacuum Pump System Control
One-day shipping available
LH Leybold NT-1500 Turbotronik Vacuum Pump Controller
在線咨詢 
