High-resolution coincidence absorption spectroscopy of formaldehyde enriched in the rare isotope oxygen-17 was performed to search for coincidences with uv ion laser transitions in the noble gases. This technique has previously proved successful in proof-of-principle laser separation of deuterium.1 The existence of a fortuitous coincidence with an ion laser would greatly simplify the proof of applicability of formaldehyde photopredissociation as a means to enrichment of oxygen-17.
{"title":"Oxygen-17 enrichment by Ne II ion laser photopredissociation of formaldehyde","authors":"J. Marling","doi":"10.1364/cleos.1976.thd7","DOIUrl":"https://doi.org/10.1364/cleos.1976.thd7","url":null,"abstract":"High-resolution coincidence absorption spectroscopy of formaldehyde enriched in the rare isotope oxygen-17 was performed to search for coincidences with uv ion laser transitions in the noble gases. This technique has previously proved successful in proof-of-principle laser separation of deuterium.1 The existence of a fortuitous coincidence with an ion laser would greatly simplify the proof of applicability of formaldehyde photopredissociation as a means to enrichment of oxygen-17.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124515069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In a laser heterodyne radar system it is convenient to generate the necessary optical local oscillator beam by frequency translating a sample of the transmitter beam power. Of the several means for doing this, one that stands out for simplicity, stability, and efficiency is the Bragg cell. The Bragg cell generates an output beam at frequency f0 − f a from a transmitter beam at f0. Unfortunately, it also provides some weaker outputs at h0 + f a , f0, f0 − 2f a , etc. These first two weaker outputs can interfere with the acquisition of fine Doppler information in weak returns at zero range rate and at some other range rates.
{"title":"Dual Bragg cell local oscillator generator for laser heterodyne radar systems","authors":"Cheng-Chung Huang","doi":"10.1364/cleos.1976.tuc5","DOIUrl":"https://doi.org/10.1364/cleos.1976.tuc5","url":null,"abstract":"In a laser heterodyne radar system it is convenient to generate the necessary optical local oscillator beam by frequency translating a sample of the transmitter beam power. Of the several means for doing this, one that stands out for simplicity, stability, and efficiency is the Bragg cell. The Bragg cell generates an output beam at frequency f0 − f\u0000 a\u0000 from a transmitter beam at f0. Unfortunately, it also provides some weaker outputs at h0 + f\u0000 a\u0000 , f0, f0 − 2f\u0000 a\u0000 , etc. These first two weaker outputs can interfere with the acquisition of fine Doppler information in weak returns at zero range rate and at some other range rates.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122120866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Data highway systems using optical fiber cable are effective means by which multiplexed data signals can be sent between various terminals over a common cable. These systems have many advantages: independence from electromagnetic interference and electrical isolation from the ground; they are flexible in that new terminals can be added without extensive amounts of cable.
{"title":"Data highway using optical fiber cable","authors":"Y. Ueno, Nagamitsu Oogi","doi":"10.1364/cleos.1976.the2","DOIUrl":"https://doi.org/10.1364/cleos.1976.the2","url":null,"abstract":"Data highway systems using optical fiber cable are effective means by which multiplexed data signals can be sent between various terminals over a common cable. These systems have many advantages: independence from electromagnetic interference and electrical isolation from the ground; they are flexible in that new terminals can be added without extensive amounts of cable.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"295 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116176771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared transparent components are critical elements of laser and electrooptical systems where they are used as environmental interface elements, as in detectors and laser windows, refractive elements, and beam combiners.
{"title":"Infrared transparent materials and components","authors":"G. Enrique Bernal","doi":"10.1364/cleos.1976.wa3","DOIUrl":"https://doi.org/10.1364/cleos.1976.wa3","url":null,"abstract":"Infrared transparent components are critical elements of laser and electrooptical systems where they are used as environmental interface elements, as in detectors and laser windows, refractive elements, and beam combiners.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121362994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A microprocessor controlled, sixty-four element, pulsed optical receiver system has been developed. It is used in conjunction with a double pulse ruby laser (1 J/pulse) for remotely sensing crosswind in the atmosphere by analyzing the laser energy scattered from a diffuse target.1
{"title":"Microprocessor controlled sixty-four element pulsed optical receiver","authors":"M. E. Fossey, J. Holmes, R. Jacob","doi":"10.1364/cleos.1976.tuf6","DOIUrl":"https://doi.org/10.1364/cleos.1976.tuf6","url":null,"abstract":"A microprocessor controlled, sixty-four element, pulsed optical receiver system has been developed. It is used in conjunction with a double pulse ruby laser (1 J/pulse) for remotely sensing crosswind in the atmosphere by analyzing the laser energy scattered from a diffuse target.1","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"33 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113965253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A concept for an active imaging system which includes a laser to scan the scene in raster fashion boresighted with a scanning receiver is under investigation. This is in effect a laser-aided forward looking infrared system which will be employed to recognize vehicular targets in inclement weather at ranges of several kilometers. The scattering properties of fog and clouds require operation at wavelengths greater than 100 µm in order that the range may not be severely limited by attenuation. The scattering properties of rain, and the need to have sufficient angular resolution consistent with a receiver diameter no greater than 1-2 m, place an upper limit to the wavelength of about 2 mm. The optical transmittance of the clear atmosphere permits operation only in a few windows between 350 µm and 1.5 mm. The range equation based upon an optical heterodyne detection system has been derived for operation in the selected windows in clear weather, fog, and rain. The properties of submillimeter lasers and detectors have been reviewed. A program is now underway at U.S. Army Missile Command to develop atmospheric attenuation and target signature information.
{"title":"System for imaging through inclement weather at submillimeter wavelengths","authors":"P. Kruse","doi":"10.1364/cleos.1976.thc7","DOIUrl":"https://doi.org/10.1364/cleos.1976.thc7","url":null,"abstract":"A concept for an active imaging system which includes a laser to scan the scene in raster fashion boresighted with a scanning receiver is under investigation. This is in effect a laser-aided forward looking infrared system which will be employed to recognize vehicular targets in inclement weather at ranges of several kilometers. The scattering properties of fog and clouds require operation at wavelengths greater than 100 µm in order that the range may not be severely limited by attenuation. The scattering properties of rain, and the need to have sufficient angular resolution consistent with a receiver diameter no greater than 1-2 m, place an upper limit to the wavelength of about 2 mm. The optical transmittance of the clear atmosphere permits operation only in a few windows between 350 µm and 1.5 mm. The range equation based upon an optical heterodyne detection system has been derived for operation in the selected windows in clear weather, fog, and rain. The properties of submillimeter lasers and detectors have been reviewed. A program is now underway at U.S. Army Missile Command to develop atmospheric attenuation and target signature information.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128768836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A description of special purpose applications of the standard videodisk player including computer interfaced digital rom, x-ray, and high resolution picture/document archival storage, and talking encyclopedia will also be given.
{"title":"Special purpose applications of the Philips MCA videodisk system","authors":"G. Kenney","doi":"10.1364/cleos.1976.tua4","DOIUrl":"https://doi.org/10.1364/cleos.1976.tua4","url":null,"abstract":"A description of special purpose applications of the standard videodisk player including computer interfaced digital rom, x-ray, and high resolution picture/document archival storage, and talking encyclopedia will also be given.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128930485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Design principles for pulsed nitrogen lasers operating in the 100-kW-1-MW range are discussed with emphasis on manufacturing and reliability. Areas where continuing development of component parts, including high peak current switches and capacitors, appears important are discussed. Performance levels for various state-of-the-art designs are compared.
{"title":"High-power nitrogen laser engineering and manufacturing","authors":"M. Sasnett, B. Woodward","doi":"10.1364/cleos.1976.we3","DOIUrl":"https://doi.org/10.1364/cleos.1976.we3","url":null,"abstract":"Design principles for pulsed nitrogen lasers operating in the 100-kW-1-MW range are discussed with emphasis on manufacturing and reliability. Areas where continuing development of component parts, including high peak current switches and capacitors, appears important are discussed. Performance levels for various state-of-the-art designs are compared.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132299529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Multidither coherent optical adaptive techniques (COAT) are at the present the leading adaptive optics system approach for high-energy laser applications. Multidither COAT has been demonstrated effective in compensating turbulence1 and thermal blooming2 with realistic targets. Previous experimental systems,1-3 however, have utilized segmented transmitter arrays that apply the adaptive phase correction in a stepwise manner across the transmitting aperture. Practical high-power coat systems will use continuous-surface deformable mirrors for both the dither and phase-correction functions, since the mirror surfaces require cooling.
{"title":"Characteristics of multidither COAT systems employing continuous-surface deformable mirrors","authors":"T. O'Meara, J. Pearson, R. Szejn","doi":"10.1364/cleos.1976.thf8","DOIUrl":"https://doi.org/10.1364/cleos.1976.thf8","url":null,"abstract":"Multidither coherent optical adaptive techniques (COAT) are at the present the leading adaptive optics system approach for high-energy laser applications. Multidither COAT has been demonstrated effective in compensating turbulence1 and thermal blooming2 with realistic targets. Previous experimental systems,1-3 however, have utilized segmented transmitter arrays that apply the adaptive phase correction in a stepwise manner across the transmitting aperture. Practical high-power coat systems will use continuous-surface deformable mirrors for both the dither and phase-correction functions, since the mirror surfaces require cooling.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131094463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To date several types of acoustooptic tunable filter have been reported. Of these the collinear type using CaMoO4 (Ref. 1) and the noncollinear type using TeO2 (Ref. 2) are the most promising. The major disadvantages of these filters are the low figure of merit for the former and the very small angular aperture for the latter.
{"title":"Acoustooptic tunable filter using a LiNbO3 crystal","authors":"Y. Fujii, H. Hayashi","doi":"10.1364/cleos.1976.wd4","DOIUrl":"https://doi.org/10.1364/cleos.1976.wd4","url":null,"abstract":"To date several types of acoustooptic tunable filter have been reported. Of these the collinear type using CaMoO4 (Ref. 1) and the noncollinear type using TeO2 (Ref. 2) are the most promising. The major disadvantages of these filters are the low figure of merit for the former and the very small angular aperture for the latter.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"28 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131839342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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