Bidirectional parametric amplification in nonlinear left-handed metamaterials

The non collinear optic parametric amplification using BBO crystal with type Ⅰ phase matched geometry is investigated theoretically.

Analysis result indicates that the localizations of high order band edge modes(BEMs) are also very strong,which means that high efficiency parametric amplification(PA) may be realized using higher order BEMs.

This can used to generate high efficient optical parametric amplification (OPA) at desired wavelength in HF.

Ultra-broadband optical parametric amplification based on pre-chirp controlling;

Broadband tunable pulses in quasi-phase-matched crystal based optical parametric amplification

Laser sources that are of high repetition,short time duration and broadly tunable are needed for the application of ultra-fast laser,and femtosecond optical parametric amplification(OPA) is the preferred method for obtaining the sources.

A novel injective femtosecond optical parametric amplifier (OPA) is developed, which can produce tunable femtosecond laser with central wavelength at 1μm, based on the traditional Ti:sapphine laser.

Several x~((2)) nonlinear process plays an important role in ultrafast optics,such as second harmonic generation(SHG),optical parametric amplifier(OPA) and optical parametric chirp pulse amplifier(OPCPA).

We analytically get the characteristic function of the two-mode field and find that the system is an optical parametric amplifier.