Dye Lasers Offer Wide Range Of Output Wavelengths For Wide Range Of Applications

Based on different dye molecules with different light absorption and radiation properties at different wavelengths, laser tuning can be realized.
China's lasers market is expected to grow at a CAGR of 11.8% from 2018-2022, and the market size is expected to reach USD 16.48 billion in 2023, maintaining a continuous growth trend. Dye laser, a device that uses organic dyes as a gain medium to emit laser light based on the principle of energy level jump and excited radiation of dye molecules, is a type of laser. Dye lasers usually use liquid dyes, but can also use solid dyes.
The working principle of the dye laser is that the dye molecule absorbs a photon, leaps to the excited state, and then is excited by the photon, which produces excited radiation, leaps from the excited state to the ground state, and at the same time releases energy through the aggregation of laser light. Based on the different dye molecules to different wavelengths of light absorption and radiation properties of different, can realize the laser tuning.
Currently there are hundreds of dyes that can produce laser light that have been researched and discovered. Dye lasers using either liquid dyes or solid dyes need to consider the stability, service life and other issues, and the commonly used materials are fluorescein sodium, rhodamine, cresyl violet, 7-diethylamino-4-methylcoumarin, 3,3'-diethylthiotricarbocyanine iodide, 1,4-bis(5-phenyloxazol-2-alkyl) benzene (POPOP) and so on. ) benzene (POPOP), etc.
Dye lasers can be divided into two categories: liquid dye lasers and solid-state dye lasers according to the form of dye; tunable dye lasers and fixed-wavelength dye lasers according to the tuning method; and pulsed dye lasers and continuous dye lasers according to the laser output method.
Dye lasers can work in the visible, ultraviolet and far-infrared regions, and are characterized by wide wavelength range, strong tunability, high output power, narrow pulse width, high pulse energy, high average power and simple structure. Among them, the wide wavelength range is the unique advantage of dye lasers over other lasers, which is especially suitable for manufacturing tunable lasers and pulsed lasers.
Dye lasers were developed and introduced in the mid-1960s, resulting in a significant broadening of the wavelength range of lasers and a continuous expansion of application areas. At the present stage, dye lasers can be widely used in biology, medicine, chemistry, industry, environmental protection, instrumentation, communications, scientific research and other fields, used in cell imaging, fluorescence detection, laser surgery, precision measurement, laser marking, material processing, environmental pollutant detection, isotope separation, spectroscopy research, quantum optics research and so on.