Abstract

A group-velocity mismatch compensation technique has been applied to cw Nd:YAG and Nd:YLF lasers mode locked by use of the nonlinear reflectivity or the nonlinear phase shift that arises from the intracavity parametric interaction of a pulse with its second harmonic. An intracavity birefringent plate, which delays the fundamental wavelength pulse with respect to the second-harmonic pulse, compensates for the opposite effect that arises in the second-harmonic crystal. Compensation reduces the pulse duration by a factor of 2 and allows pulses of 5.1 and 5.9 ps to be obtained from Nd:YLF and Nd:YAG lasers, respectively.

© 1995 Optical Society of America

Self-starting mode locking of a cw Nd:YAG laser using cascaded second-order nonlinearities

G. Cerullo, S. De Silvestri, A. Monguzzi, D. Segala, and V. Magni
Opt. Lett. 20(7) 746-748 (1995)

Nonlinear mirror mode locking of a cw Nd:YLF laser

M. B. Danailov, G. Cerullo, V. Magni, D. Segala, and S. De Silvestri
Opt. Lett. 19(11) 792-794 (1994)

Compensating group-velocity mismatch in parametric frequency generation

Usman K. Sapaev and Gaetano Assanto
Opt. Lett. 32(20) 2921-2923 (2007)

Thermal lensing measurement and compensation in a continuous-wave mode-locked Nd:YLF laser

Herman Vanherzeele
Opt. Lett. 13(5) 369-371 (1988)

Dual colour cw mode-locking through soft aperture based on second order cascaded nonlinearity

Sourabh Mukhopadhyay, Shyamal Mondal, Satya Pratap Singh, Aditya Date, Kamal Hussain, and Prasanta Kumar Datta
Opt. Express 21(1) 454-462 (2013)