کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9786188 | 1512667 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sum and difference frequency generation by femtosecond laser pulses in a nonlinear crystal
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sum and difference frequency generation by femtosecond laser pulses in a nonlinear crystal Sum and difference frequency generation by femtosecond laser pulses in a nonlinear crystal](/preview/png/9786188.png)
چکیده انگلیسی
We solve using the finite-difference time domain method the Maxwell's equations describing the sum and difference frequency generation by a femtosecond laser pulse in a nonlinear crystal. We model the propagation of an ordinary polarized signal pulse of a few optical cycles duration in the presence of extraordinary polarized femtosecond pump pulse in a negative uniaxial crystal in the direction normal to the optical axis. As an example, we apply our model to study the propagation of a signal pulse of Ïs = 10 fs duration at λs = 800 nm central wavelength in the presence of pump pulse of Ïp = 100 fs duration at λp = 532 nm central wavelength in a LiNbO3 crystal of 60-μm thickness at a temperature of 230 °C. We focus on the conversion efficiency as a function of temperature and pump intensity, and find that the temperature tuning bandwidth for the conversion efficiency in the near infrared spectral range is about 70 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 245, Issues 1â6, 17 January 2005, Pages 443-456
Journal: Optics Communications - Volume 245, Issues 1â6, 17 January 2005, Pages 443-456
نویسندگان
David Hovhannisyan, Komitas Stepanyan, Razmik Avagyan,