What is the wavelength of argon ion laser?
What is the wavelength of argon ion laser?
The argon laser contains argon gas and produces a visible blue-green beam with wavelengths of 488 nm and 514 nm, which are absorbed selectively by hemoglobin, melanin, and other pigments that lie under the retina.
How does an argon ion laser work?
The argon gas laser works by burning and sealing the blood vessels. The lasers give out continuous waves of milliwatts to tens of watts. It passes through tubes made of Nickel end bells, Kevlar metal to ceramic seals, beryllium oxide ceramics or tungsten disks.
Which gas is used in laser?
The most common of all gas lasers is the helium-neon (He-Ne) laser. The presence of two atomic species (helium and neon) in this gas laser might suggest that the medium is made of molecules, but these two species of atoms do not form a stable molecule. In fact, all inert atoms like helium, argon, krypton, etc.
Why is krypton used in lasers?
Krypton is also used in lasers as a control for a desired wavelength, especially in red lasers because Krypton has a much higher light density in the red spectral region than other gases such as Neon, which is why krypton-based lasers are used to produce red light in laser-light shows.
What is the frequency of an argon laser?
The five lines below 260 nm are frequency doubled. The linewidths of the argon ion emission lines at 488.0 and 514.5 nm are around 4.0 GHz….Argon Ion Laser.
| Wavelength (nm) | Power (mW) |
|---|---|
| 496.5 | 720 |
| 501.7 | 480 |
| 514.5 | 2400 |
| 528.7 | 420 |
What are argon ions?
Argon ion lasers are ion lasers, which typically generate multiple watts of optical power in a green or blue output beam with high beam quality. They are the most common ion lasers, and can produce the highest output powers of those.
How are argon lasers made?
The core component of an argon ion laser is an argon-filled tube, made e.g. of beryllium oxide ceramics, in which an intense electrical discharge between two hollow electrodes generates a plasma with a high density of argon (Ar+) ions. The intense electric current is associated with a substantial gas pumping effect.
Which gas serves as buffer gas in laser ablation?
Helium gas
Explanation: Laser ablation has been extensively used for the preparation of nanoparticles. In the device, there is a pulsed flow of Helium gas. It serves as a buffer gas in which clusters of the target material form, thermalize.
What are ion lasers used for?
Multi-watt argon ion lasers can be used e.g. for pumping titanium–sapphire lasers and dye lasers, or for laser light shows. However, they have been more and more replaced with frequency-doubled diode-pumped solid-state lasers. The latter are far more power efficient and have longer lifetimes, but are more expensive.
Is Argon an atom or ion?
Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv)….
| Argon | |
|---|---|
| Atomic number (Z) | 18 |
| Group | group 18 (noble gases) |
| Period | period 3 |
| Block | p-block |
Is argon laser is a four level laser?
The Argon ion Laser is a four-level laser. The various energy level of argon ion is shown in the figure. When electric discharge passes through the tube, the Argon atoms are pumped to energy level E3 by two-step of collision with electrons.
What are the characteristics of argon ion lasers?
Argon-ion lasers emit powerful lines at 488 and 514.5 nm, allowing initial excitation of fluorescein and rhodamine (and later emission of phycobiliproteins and their tandem dyes) (Shapiro, 2003). Argon-ion lasers also produce a relatively strong series of lines in the ultraviolet, particularly at 351 and 364 nm (Fig. 1).
What is an ion laser give an example?
In ion lasers, both Pulsed and continuous laser action have been observed. For example, Argon ion laser, Krypton ion laser, and mercury in a laser are common ion gas lasers . What is an argon laser?
What part of the electromagnetic spectrum does the Ar ion laser emit?
The Ar ion laser emission is in the blue-green part of the spectrum. This emission is well transmitted and well focused by the eye and may cause damage to the retina. When using the Ar laser, special goggles which block out the blue-green laser emission must be worn to protect the eyes.
What power supply do I need for an argon laser?
A 240 V three phase power supply and ca. 35 A are required for pumping a medium power 5 W argon ion laser. The tube also requires water cooling at a flow rate of ca. 10 L/min and a pressure of 25 psi because of the large amount of heat dissipation.
