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year 28, Issue 2 (ICOP & ICPET 2022 2022)                   ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 935-938 | Back to browse issues page

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masaeli M, Arabanian A S, Massudi R. Comparison of the intracavity and extra cavity of second harmonic generation in a nanosecond pulsed Nd:YAG laser with a repetition rate of the order of KHz. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :935-938
URL: http://opsi.ir/article-1-2558-en.html
Comparison of the intracavity and extra cavity of second harmonic generation in a nanosecond pulsed Nd:YAG laser with a repetition rate of the order of KHz
Mahdi Masaeli * 1, Atoosa Sadat Arabanian1 , Reza Massudi1
1- Laser and plasma research institute of Shahid Beheshti university
Abstract:   (472 Views)
 An effective method to produce a laser beam in the visible region is second harmonic generation (SHG) from a laser beam in the infrared spectrum using nonlinear crystals. In this paper, an arrangement for the high-efficiency production of a nanosecond pulsed green laser is presented by intracavity second harmonic generation of a longitudinally pumped Nd:YAG laser. For this purpose, a L-shaped cavity is designed in such a way that the created thermal lens in the active medium due to laser pomp well compensated and the stability of the cavity is in established a range of 1 to 20 watts. Then, output power of SHG in this arrangement is compared with that of extra cavity SHG. Both simulation and experimental results illustrate a 30-fold. increase of the output green power of the arrangement with the intracavity second harmonic generation  compared to the extra cavity.
Keywords: cavity stability, intracavity second harmonic generation, longitudinally pump, thermal lens
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Type of Study: Experimental | Subject: Special
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