Apparatus and method for simultaneously generating terahertz wave and supercontinuum, and spectroscopy method using the same

A method of simultaneously generating terahertz wave and supercontinuum, comprising:

• allowing a single input light signal to be incident on a focusing lens;
• focusing the input light signal, allowing the focused input light signal to be incident on a first optical medium and then generating terahertz wave;
• and
• allowing the input light signal, used to generate the terahertz wave, to be incident on a second optical medium causing nonlinear effect, and then generating supercontinuum.

A method of simultaneously generating a terahertz wave and a supercontinuum, comprising:

• allowing a single input light signal to be incident on a focusing lens;
• focusing the input light signal, allowing the focused input light signal to be incident on a first optical medium, and then generating two light signals having different frequencies;
• focusing the two light signals and generating air plasma;
• generating terahertz wave when the air plasma undergoes a reaction;
• and
• allowing the light signals, used to generate the terahertz wave, to be incident on a second optical medium causing nonlinear effect, and then generating supercontinuum.