کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1539594 | 996640 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance of a 80Â W copper vapor laser with “alignment free” unstable CAT-EYE resonator and other configurations using intra-cavity apertures
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Off-axis unstable CAT-EYE unstable resonator was also demonstrated for the first time with further reduction in beam divergence to â¼0.13Â mrad and with output power of â¼28Â W. The misalignment tolerance was found to be highest in case of off-axis unstable CAT-EYE resonator with decline/drift in laser power of only â¼10% for misalignment angle as high as â¼8Â mrad. Performance with intra-cavity apertures in plane-plane type CAT-EYE resonator for transverse mode control is also presented for the first time in CVLs. It is observed that the laser beam divergence reduces significantly to 1.25Â mrad (a factor of 2) on using an aperture of â¼3.5Â mm at the CAT-EYE reflector as compared to its normal (RÂ =Â FÂ =Â d) configuration without aperture. In case of stable CAT-EYE resonator the average beam divergence reduces from 8Â mrad to 4Â mrad (factor of 2) on using intra-cavity aperture of about 3Â mm. It was also observed that high misalignment tolerance was retained on using intra-cavity apertures in almost all the CAT-EYE resonators. Use of intra-cavity mesh was also demonstrated for the first time with stable CAT-EYE resonator for improving the beam focus-ability. Average beam divergence was reduced by a factor of 2.5 (from 8Â mrad to 3Â mrad) on using intra-cavity mesh. These new configurations in CAT-EYE resonators in KE-CVLs are found to be effective in improving and controlling the laser beam divergence significantly with additional characteristic of high misalignment tolerance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 281, Issue 24, 15 December 2008, Pages 6080-6090
Journal: Optics Communications - Volume 281, Issue 24, 15 December 2008, Pages 6080-6090
نویسندگان
Bijendra Singh, S.R. Daultabad, V.V. Subramaniam, Ashim Chakraborty,