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1. 发明公开

EP0058160A4 GENERATION OF STABLE FREQUENCY RADIATION AT AN OPTICAL FREQUENCY. 失效
标题翻译：创造了一个光学频率稳定频率的辐射。
公开(公告)号：EP0058160A4
公开(公告)日：1986-02-10
申请号：EP81901559
申请日：1980-08-21
申请人： LASER SCIENCE INC
发明人： JAVAN ALI
IPC分类号： G02F1/35 , G02F1/01 , H01S3/10 , H01S3/107 , H01S3/13 , H01S3/137 , H01S3/139 , G01C3/08
CPC分类号： G02F1/0121 , H01S3/1394
摘要： Stable-frequency optical radiation is generated by use of an electro-optical modulator to produce from radiation of a power laser that has inherent frequency fluctuations, an optical side band of the radiation that has the stable frequency. A modulating signal is applied to the modulator (12), the signal based upon a difference-frequency signal that represents the difference in frequencies between the output of the power laser (10) and an optical signal obtained from a highly stable reference source (20). The reference radiation shown is the direct output radiation of a stable reference laser. In one embodiment the pulses of a high power CO u TEA laser operating on a single mode are synchronized with a pulsed broad band amplifier (22) which amplifies the difference-frequency signal to produce the modulating signal, and an optical delay (30) in the power laser output path, preceding the modulator, corrects for the delay provided by the amplifier and other sources of delay The invention provides chirp free pulsed lasers, and lasers having stable frequency from pulse to pulse. Improved doppler lidar and other lidar systems are provided that utilize the stabilized output as the probing radiation.

2. 发明公开

EP0150788A2 Gas laser with acoustic baffle 失效
标题翻译：气体激光器与声波屏。
公开(公告)号：EP0150788A2
公开(公告)日：1985-08-07
申请号：EP85100566.0
申请日：1985-01-21
申请人： Laser Science, Inc.
发明人： Nazemi, Said
IPC分类号： H01S3/03 , H01S3/097
CPC分类号： H01S3/036 , H01S3/03 , H01S3/038 , H01S3/09713
摘要： A gas laser having an outer conductive shell and two axially displaced spaced plastic cylinders mounted within the shell. The inner plastic cylinder supports the high voltage components to produce a transverse electrical discharge. The outer plastic cylinder is spaced from the outer shell by rubber feet and forms an acoustic baffle to decrease the noise radiated during operation. High speed fans circulate the laser gas around the annular path between the two cylinders and between the high voltage electrodes. The inner plastic cylinder is manually removable for repair or other reason and carries with it all of the electrical components within the outer shell. High voltage is fed to the high voltage electrodes by means of a circuit that does not include the outer shell. This arrangement minimizes operating noise, provides maximum safety for operating personnel, and minimizes eiectri- cal interference.

3. 发明公开

EP0058160A1 GENERATION OF STABLE FREQUENCY RADIATION AT AN OPTICAL FREQUENCY 失效
标题翻译：创造了一个光学频率稳定频率的辐射。
公开(公告)号：EP0058160A1
公开(公告)日：1982-08-25
申请号：EP81901559.0
申请日：1980-08-21
申请人： LASER SCIENCE INC.
发明人： JAVAN, Ali
IPC分类号： G02F1 , H01S3
CPC分类号： G02F1/0121 , H01S3/1394
摘要： Une radiation optique de frequence stable est generee en utilisant un modulateur electro-optique pour produire a partir d'une radiation d'un laser de puissance qui possede des fluctuations de frequence inherentes, une bande laterale optique de la radiation qui possede la frequence stable. Un signal de modulation est applique au modulateur (12), le signal etant base sur un signal de difference de frequence qui represente la difference des frequences entre la sortie du laser de puissance (10) et un signal optique obtenu a partir d'une source de reference extremement stable (20). La radiation de reference decrite est la radiation de sortie directe d'un laser de reference stable. Dans un mode de realisation, les impulsions d'un laser TEA CO2 de haute puissance fonctionnant sur un simple mode sont synchronisees avec un amplificateur a bande large a impulsions (22) qui amplifie le signal de difference de frequence pour produire le signal de modulation, et un temporisateur optique (30) dans la trajectoire de sortie du laser de puissance, precedant le modulateur, corrige la temporisation creee par l'amplificateur et par d'autres sources de temporisation. L'invention permet d'obtenir des lasers a impulsions sans gresillements, et des lasers ayant une frequence stable d'impulsion a impulsion. Des systemes ameliores "Doppler Lidar" et d'autres systemes "Lidar" utilisent la sortie stabilisee comme radiation de sonde.

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