کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9786131 | 1512666 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Use of commercial grade light emitting diode in auto-correlation measurements of femtosecond and picosecond laser pulses at 1054 nm
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Commercial grade AlGaAs based light emitting diodes (LEDs) have been characterized at 1054 nm for their non-linear photoconductivity and effect of aging and used as a two-photon detector to record auto-correlation signals of ultra-short laser pulses. The lifetime of these LEDs is found to be â¼6Â ÃÂ 1011 and â¼2Â ÃÂ 1011 laser pulses at an average incident power level of 20 and 60 mW of 200 fs laser pulses, respectively. These LEDs have been used for real time recording of interferometric auto-correlation (IAC) to determine pulse duration and sensitive detection of the frequency chirp of 200 fs laser pulses. A twofold enhancement in sensitivity of new modified signal, derived from the envelope functions of IAC signal, has been achieved. The suitability of these LEDs to record intensity auto-correlation in multi-picosecond regime is also demonstrated using 30ps laser pulses from an Nd:YLF oscillator.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 246, Issues 1â3, 1 February 2005, Pages 195-204
Journal: Optics Communications - Volume 246, Issues 1â3, 1 February 2005, Pages 195-204
نویسندگان
A.K. Sharma, M. Raghuramaiah, P.A. Naik, P.D. Gupta,