Zinc selenide windowprice

The amount of energy delivered, determines the magnitude of the laser interaction within the tissues and the individual cells.

Zinc Selenidetransmission spectrum

The energy density expresses the total amount of energy delivered per unit area, in Joules per square centimeter (J/cm2).The energy is measured in Joules, and is calculated by multiplying the power output of the laser times the amount of time elapsed during the laser treatment.Example:A 4 Watt continuous wave laser would deliver 240 Joules in one minute.(4 Watts x 60 seconds = 240 Joules)Then simply divide the total energy by the area to arrive at the energy density in Joules per centimeter squared.

Power density or Irradiance refers to the amount of power delivered per unit area.Power density indicates the degree of concentration of the laser output.It is expressed in Watts per square centimeter (W/cm2), or miliWatts per square centimeter (mW/cm2)Some studies have concluded that the power density may be of even greater significance than the dose.Example: A laser’s output is 4 Watts, and it is illuminating a circle of 3 centimeter diameter.First find the area of the circle, 3.14 x 1.5 x 1.5 = 7 cm2.Then divide the power by the area, 4W / 7cm2 = 0.6 W/cm2.

Zinc Selenide (ZnSe) Windows are ideal for a wide variety of infrared applications including thermal imaging, FLIR, and medical systems. This chemically vapor deposited material has wide usage in high power CO2 laser systems because of its low absorption coefficient and high resistance to thermal shock. Zinc Selenide (ZnSe) is a relatively soft material that scratches easily and it is not recommended in harsh environments because its Knoop Hardness is only 120. When handling, apply uniform pressure and wear Latex finger cots or gloves to prevent contamination.

Doubling the spot size will increase the effective volume by a factor of eight.A larger spot size usually enables faster and more effective treatment in dermatologic applications such as treatment of vascular lesions, laser hair removal, etc.However, more photons must be supplied by more complex and expensive power supplies, components, and delivery devices.As a general rule, doubling the spot size and halving the fluence will yield an equivalent effective fluence at a given depth. This effect becomes more pronounced with increasing depth.