Enhancement of stability and efficiency of a nonlinear mirror mode-locked Nd:YVO4 oscillator by an active Q-switch | Zendy

Prasanta Kumar Datta | Zendy; Sourabh Mukhopadhyay | Zendy; Susanta Kumar Das | Zendy; Luca Tartara | Zendy; Antonio Agnesi | Zendy; Vittorio Degiorgio | Zendy

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Enhancement of stability and efficiency of a nonlinear mirror mode-locked Nd:YVO4 oscillator by an active Q-switch

Author(s) -

Prasanta Kumar Datta,

Sourabh Mukhopadhyay,

Susanta Kumar Das,

Luca Tartara,

Antonio Agnesi,

Vittorio Degiorgio

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.004041

Subject(s) - optics , laser , envelope (radar) , materials science , mode locking , power (physics) , modulation (music) , q switching , pulse width modulation , physics , telecommunications , radar , quantum mechanics , computer science , acoustics

The stability and the peak power of a nonlinear-mirror mode-locked Nd:YVO(4) laser are significantly increased by the insertion of an acousto-optic modulator inside the laser cavity. The repetition rate for reliable operation can be varied in the range 35 kHz - 50 kHz. The laser generates the most intense and stable mode-locked pulses of width 9 ps lying underneath a Q-switched envelope of width 110 ns with a Q-switch modulation frequency of 38 kHz. For 10 W of pump power, a 224 times enhancement of peak power over that of cw mode-locking is obtained under reliable Q-switched and mode-locked operation.

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