Simultaneous multi-wavelength oscillation of Nd laser around 1.3 μm: A potential source for coherent terahertz generation | Zendy

Ardhendu Saha | Zendy; Aniruddha Ray | Zendy; Sourabh Mukhopadhyay | Zendy; Nandita Sinha | Zendy; Prasanta Kumar Datta | Zendy; Pranab Kumar Dutta | Zendy

Open Access

Simultaneous multi-wavelength oscillation of Nd laser around 1.3 μm: A potential source for coherent terahertz generation

Author(s) -

Ardhendu Saha,

Aniruddha Ray,

Sourabh Mukhopadhyay,

Nandita Sinha,

Prasanta Kumar Datta,

Pranab Kumar Dutta

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.004721

Subject(s) - terahertz radiation , laser , optics , wavelength , materials science , radiation , oscillation (cell signaling) , optoelectronics , diode , slope efficiency , fiber laser , physics , chemistry , biochemistry

Simultaneous oscillations of 1318.8nm, 1320.0nm, 1332.6nm, 1335.0nm, 1338.2nm and 1339.0nm in a side, pulsed-diode-laser-array pumped Nd:YAG laser is realized for both free running and Q-switched operation. An average power of 1.1W is obtained for an absorbed pump power of 7.1W with an effective optical slope efficiency of 33%. The difference frequency interactions among these wavelengths may be used to generate radiation in the range 0.13-3.43THz. With the two most intense lines at 1318.8nm and 1338.2nm, it is possible to generate coherent radiation at 3.3THz with numerically estimated peak power of 0.21W in a 1.5mm thick GaSe crystal.

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