{"title":"Study of Laser Diode Generation in a Resonator with an External Planar Waveguide Reflector Based on the Bragg Grating","authors":"M. A. Kononov, V. V. Svetikov, V. I. Pustovoy","doi":"10.3103/S1541308X24700079","DOIUrl":null,"url":null,"abstract":"<p>Lasing of a wide-strip (100 µm) laser diode in an external resonator based on a planar waveguide structure with the Bragg grating is experimentally studied. The waveguide structure is made on Si substrates with a SiO<sub>2</sub>:GeO<sub>2</sub> waveguide layer with the contrast of 2.4%. Spectral parameters of lasing and the far-field radiation distribution are investigated as a function of the relative position of the planes of the laser diode and external planar structure waveguides. It is shown that the higher-order transverse mode dominates in the lasing, and a substantial decrease in the spectral width of the radiation and stabilization of the spectrum are observed in the entire range of operating currents. Lasing in the radiationless and emitted waveguide modes of the external planar structure is demonstrated.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 2","pages":"135 - 139"},"PeriodicalIF":1.1000,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Wave Phenomena","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S1541308X24700079","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
Lasing of a wide-strip (100 µm) laser diode in an external resonator based on a planar waveguide structure with the Bragg grating is experimentally studied. The waveguide structure is made on Si substrates with a SiO2:GeO2 waveguide layer with the contrast of 2.4%. Spectral parameters of lasing and the far-field radiation distribution are investigated as a function of the relative position of the planes of the laser diode and external planar structure waveguides. It is shown that the higher-order transverse mode dominates in the lasing, and a substantial decrease in the spectral width of the radiation and stabilization of the spectrum are observed in the entire range of operating currents. Lasing in the radiationless and emitted waveguide modes of the external planar structure is demonstrated.
期刊介绍：
Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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