| HeNe laser: |
mainly 632.8 nm red light |
| Ruby laser |
mainly 694.3 nm |
| Asterite (Cr:BeAl2O4) lasers: |
mainly at 694nm, and 347nm |
| UV lasers: |
100nm-400nm, including |
| 1. 193nm - Excimer ArF laser |
| 2. 248nm - KrF excimer lasers |
| 3. 308nm - Xenon doped ion laser |
| 4. 355nm - triple-frequency solid-state lasers (e.g., Nd:YAG) |
| 5. 193nm, 157nm - F2 and ArF excimer lasers |
| Argon Ion Lasers. |
1. 514.5 nm (green) |
| 2. 488.0 nm (blue-green) |
| 3. 457.9 nm (blue) |
| He-Cd excimer lasers: |
The main wavelengths are 325 nm and 442 nm and contain the following typical lasers |
| 1. ArF laser - 193nm ultraviolet light |
| 2. KrF laser - 248nm UV |
| 3. XeCl laser - 308nm UV |
| 4. XeF laser - 351nm UV |
| 5. N2 laser - 337nm UV |
| 6. F2 laser - 157nm vacuum UV |
| Semiconductor lasers |
including the following typical lasers |
| 1. Infrared laser. |
| - 760nm ~ 2000nm: GaAs, InGaAs, InGaAsP and other materials. |
| - Common wavelengths include: 808nm, 980nm, 1310nm, 1550nm. |
| 2. Red laser: 630nm ~ 690nm |
| - 630nm ~ 690nm: AlGaInP, AlGaAs |
| - Common wavelengths include: 650nm, 670nm, 685nm |
| 3. Green laser: 510nm ~ 570nm |
| - 510nm ~ 570nm: InGaN, AlGaInP |
| - Common wavelengths include: 520nm, 532nm |
| 4. blue-violet laser: 375nm ~ 500nm |
| - 375nm ~ 500nm: GaN, InGaN |
| - Common wavelengths include: 405nm, 445nm, 473nm |
| 5. Ultraviolet Laser: 340nm ~ 380nm |
| - 340nm ~ 380nm: AlGaN |
| Common wavelengths include: 355nm, 375nm |
| Erbium lasers |
Including the following typical lasers |
| 1. 1550nm near-infrared wavelengths |
| This is the strongest emission line of erbium ions in glass or optical fibers, corresponding to the 4I13/2 → 4I15/2 transition. It is widely used in optical communications and fiber amplifiers. |
| 2. 2940nm mid-infrared wavelengths |
| Corresponding to the 4I11/2→4I13/2 transition, it has some applications in the medical and remote sensing fields. |
| 3. 1617nm eye-safe wavelength |
| Corresponding to the 4I13/2→4I15/2 transition, commonly used in applications such as distance measurement and atmospheric remote sensing. |
| 4. 840nm and 980nm pump wavelengths |
| Corresponding to 4I15/2→4I11/2 and 4I15/2→4I11/2 leaps, commonly used for pumping erbium-doped lasers and light intensifiers. |
| Diode lasers |
Including the following typical lasers |
| 1. Infrared band. |
| - 650nm - 690nm (AlGaInP/GaAs) |
| - 760nm - 830nm (AlGaAs) |
| - 930nm - 1100nm (InGaAs) |
| - 1260nm - 1650nm (InGaAsP/InP) |
| 2. Red light band: 630nm - 683nm (InGaAs) |
| - 630nm - 683nm (AlGaInP/GaAs) |
| 3. Orange/Yellow band: 590nm - 635nm (AlGaInP/GaAs) |
| - 590nm - 635nm (AlGaInP) |
| 4. green band: 510nm - 565nm (AlGaInP/GaAs) |
| - 510nm - 565nm (InGaN/GaN) |
| 5. Blue/UV band: 375nm - 475nm (InGaN/GaN) |
| - 375nm - 475nm (InGaN/GaN) |
| - 340nm - 380nm (AlGaN) |
| Holmium (Nd) Ion Lasers |
Common holmium laser wavelengths include |
| 1. 1064nm Near Infrared (NIR) wavelength, widely used in industrial processing, medical cosmetology, remote sensing and ranging. |
| 2. 1123nm near-infrared wavelength, commonly used in LIDAR and fiber optic communication. |
| 3. 1330nm near infrared wavelength, in the field of fiber optic communications and remote sensing has some applications. |
| 4. 946nm near-infrared wavelength, can be used for pumping holmium-doped solid-state lasers. |
| 5. 532nm/355nm green/ultraviolet wavelengths, obtained from 1064nm fundamental output by frequency doubling or tripling technique. |
| Nd:YAG is the most widely used. Holmium lasers have high efficiency, good beam quality, and cost-effectiveness, and have important applications in both scientific research and industrial fields |
| IPL |
Instead of a single wavelength laser, IPL produces pulsed photon output over a wide wavelength range, typically covering the 400nm-1200nm band, including visible light and some near-infrared light. |
