{"title":"Enhancement of Conversion Efficiency of Intracavity-Frequency-Doubled Nd:YVO4 Laser by Cross-Polarized Longitudinal Modes","authors":"H. Hsieh, C. Hsu, S. Huang, F. Kao","doi":"10.1364/sslma.1997.tuc5","DOIUrl":null,"url":null,"abstract":"Significant amount of effort has been made in the development of diode laser pumped green light Nd:YVO4 through intracavity frequency doubling in recent years. The sum frequency generation from longitudinal modes often cause the so called 'green problem' even at low power operation [1]. Nonetheless, it has been shown that higher frequency conversion efficiency can be made possible by utilizing the interplay between second harmonic and sum frequency generation to produce periodic pulse oscillation [2]. In this paper, we are showing that under cross-polarized two-mode oscillation (CPTMO), the convergent efficiency can be 50 % higher than that of parallel polarized two-mode oscillation (PPTMO).","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Lasers: Materials and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/sslma.1997.tuc5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Significant amount of effort has been made in the development of diode laser pumped green light Nd:YVO4 through intracavity frequency doubling in recent years. The sum frequency generation from longitudinal modes often cause the so called 'green problem' even at low power operation [1]. Nonetheless, it has been shown that higher frequency conversion efficiency can be made possible by utilizing the interplay between second harmonic and sum frequency generation to produce periodic pulse oscillation [2]. In this paper, we are showing that under cross-polarized two-mode oscillation (CPTMO), the convergent efficiency can be 50 % higher than that of parallel polarized two-mode oscillation (PPTMO).
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