Application of the diffraction grating
Diffraction grating spectral element is the core component of one kind, but also the spectrum of the instrument. Before the 1960s, holographic gratings, ruled grating as dispersive element, widely used spectrograph spectral analysis, the analysis of material composition, exploring the mysteries of the universe, the nature of the development will use instruments, greatly promoted, including physics, astronomy, comprehensive development of chemistry, biology and other sciences. With the development of science and technology, its application had not limited to the field of spectroscopy, has been widely used in metrology, astronomy, optics, optical communications, and other aspects of atomic energy. Therefore, the study of gratings technology has never ceased.
The classical concept of the diffraction grating is simple, but its content is extremely rich. In the past two decades, far more than the use of the grating range of applications in the traditional sense, in many areas such as research and technology become irreplaceable and important tool. For example, a diffraction grating used in integrated optics, optical holography, spectral analysis, blur, digital to analog conversion, related storage, coupled beam, beam expander, beam deflection, beam sampling beam splitter, optical logic, data storage, optical testing, mode conversion, phase conjugation, pulse shaping and compression, transfer Q, clamping, signal processing, solar concentration, spatial light modulators, optical switches, diagnostic measurement, image recognition and so on, while the grating also has been applied in new areas.
In recent years, a series of new grating for scientific and technological development and innovation in industrial production technology also play an increasingly important role: to make the grating within the fiber, resulting in a fiber grating, and promote the development of optical communication industry; and combined waveguide gratings, arrayed waveguide grating produced, it is very important WDM optical fiber communication devices; femtosecond chirped pulse amplification grating laser technology for generating strong; the large size of the laser pulse compression gratings nuclear fusion devices indispensable beam splitter; Dammann grating arrays used in optoelectronic lighting technologies; volume holographic grating wavelength division multiplexing and optical storage areas has been almost entered the practical stage.
Raster promote the development of science and technology, the demand for grating in the world is growing.