What is frequency modulation spectroscopy?

What is frequency modulation spectroscopy?

In frequency modulation spectroscopy, as the wavelength is scanned across the atomic transition, the wavelength modulation is converted into amplitude modulation, giving rise to a modulation in the optical absorption of a sample at the same frequency.

What is laser spectroscopy used for?

Laser spectroscopy provides chemists with an extremely versatile tool for analytical spectrochemistry, for probing the dynamic behavior of chemical reactions, and for determining molecular structure and energy levels.

What are laser frequencies?

The color of light is determined by its frequency or wavelength. The shorter wavelengths are the ultraviolet and the longer wavelengths are the infrared….

What is modulation spectroscopy?

In modulation spectroscopy the optical spectra of a solid is modified in some manner by the periodic variation of the measurement condition. This modulated perturbation gives rise to sharp, differential-like optical features in the region of photon energies where optical excitation processes occur.

Who invented laser spectroscopy?

Dr. Theodore Maiman of Hughes Research Laboratories, with the first working laser. Theodore Maiman developed the first working laser at Hughes Research Lab in 1960, and his paper describing the operation of the first laser was published in Nature three months later.

How many frequencies does a laser have?

Certain beams of light, such as laser beams, can get very close to having one frequency, but can never have exactly one frequency.

What is the principle of laser?

The principle of a laser is based on three separate features: a) stimulated emission within an amplifying medium, b) population inversion of electronics and c) an optical resonator.

What are the three types of lasers?

Types of lasers

• Solid-state laser.
• Gas laser.
• Liquid laser.
• Semiconductor laser.