title: Simultaneous multi-wavelength oscillation of Nd laser around 1.3 mum: A potential source for coherent terahertz generation.
abstract: 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.
authors.forename: Ardhendu
authors.initials: A
authors.lastname: Saha
authors.forename: Aniruddha
authors.initials: A
authors.lastname: Ray
authors.forename: Sourabh
authors.initials: S
authors.lastname: Mukhopadhyay
authors.forename: Nandita
authors.initials: N
authors.lastname: Sinha
authors.forename: Prasanta K
authors.initials: PK
authors.lastname: Datta
authors.forename: Pranab K
authors.initials: PK
authors.lastname: Dutta