aLasers of different wavelengths are used to read different types of media. A CD player uses a laser with a wavelength of 780 nm. This is in the infrared light range. DVD players use wavelengths in the 650 nm range. This is why you will see a red light when the player is working. ...
The copper-laser-pumped dye laser system developed at the Lawrence Livermore National Laboratory (LLNL) is now capable of sustained, efficient, and reliable operation at total powers exceeding 2500 W and single amplifier chain powers exceeding 1300 W. Wavelength center frequency stability is maintainabl...
We present a high-average-power femtosecond laser system at 520 nm central wavelength. The laser system delivers sub-500 fs pulses with 135 W average power at a pulse repetition rate of 5.25 MHz. Excellent beam quality is provided by high power fiber amplifiers and maintained during frequency ...
and the standard deviation is 0.4% of the mean. The diffraction efficiency as a function of wavelength for θ = 36.8°, ϕ = 0° incidence angle is shown as the red circles inFig. 1b with <0.1% uncertainty as measured with a tunable narrow-bandwidth laser. Additionally, a Ti...
𝜆𝑐1λc1 is the wavelength of the first carrier component. d is the distance between antennas. C is the light velocity. Therefore, the two-dimensional space coordinates (𝑋𝑚, 𝑌𝑚)(Xm, Ym) of the mth target can be expressed as follows: {𝑋𝑚=𝑅(𝑡)·𝑠𝑖𝑛 ...
by increasing thickness and thus aperture of the crystal. Quasi-three energy level materials (Yb:YAG), resulting in the high quenching of the laser wavelength, also requires a reduction in the crystal thickness and active ions doping concentration due to the lower laser level being close to the...
However, long- wavelength lasers require expensive broadband infrared (IR) optics, a large size facility, and safety issues arise when no visible light is used because no warning due to the blinking reflex of the eye is possible [30]. Laser ablation with visible wavelength lasers represents a ...
A laser diode with a wavelength of 532 nm is collimated to a diameter of several millimeters and is used to irradiate the gold mirror surface by folding back with mirrors to heat the substrate several times (Figure 1). The absorptions of gold for 532 and 800 nm are ~70% and ~3%, ...