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Paper Information

Journal:   (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY   SPRING 2018 , Volume 9 , Number 1 ; Page(s) 77 To 85.
 
Paper: 

SIMULATION OF FREQUENCY MODULATION MODE-LOCKING IN A ND: YLF LASER AND INVESTIGATION OF DETUNING INFLUENCE ON THE LASER PARAMETERS

 
 
Author(s):  MALAKZADEH A.*, KAMJOO M.J., GHAED RAHMATI M.
 
* IMAM HOSSEIN UNIVERSITY
 
Abstract: 

Todays, ultrashort pulse lasers are employed in many branches of science and technology. Surface coating destruction, three dimensional micro or nano-structuring, terahertz wave generation and various spectroscopic techniques such as: ultrashort pulse laser induced breakdown spectroscopy, filament induced breakdown spectroscopy, and also different and several applications in nuclear physics are a portion of ultrashort pulse lasers utilizations. In this work, frequency modulation is firstly overviewed and then active mode-locking using the modulation is investigated in details. The modulation is in fact employed for ultrashort pulse generation by cavity loss modulation or phase changes modulation in a round trip. This can be done using an acousto-optical modulator or an electro-optical modulator. Later the mode-locking in a Nd: YLF laser cavity implementing self-consistent method is simulated. Ultrashort pulses shorter than 40ps with 120nJ energy and a rate of 250MHz are output of the designed oscillator.

 
Keyword(s): FREQUENCY MODULATION, MODE-LOCKING, SELF-CONSISTENT
 
References: 
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