answer_key_for_laser_b1_workbook_cracked__34 v1.0.0

Answer Key For Laser B1 Workbook CRACKED

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in order to minimize the laser energy absorbed by the skin tissue, it is important to use a laser with a low energy fluence. as the skin tissue absorbs only 0.1 to 0.3 mm-1 of the energy, then the amount of energy absorbed by the laser beam is much less than 1 mj/cm2. the laser light is largely absorbed by the tissue and there is very little energy absorbed by the skin. in order to ensure that the laser beam may reach the targeted skin site, the beam width needs to be large enough. the minimum beam width to ensure that the laser beam is within the skin is approximately 2 cm, which is the distance between the tip of the laser light and the focal spot of the laser beam.

the total optical absorption and the reduced scattering coefficients of the skin are shown in fig. 3. as the reduced scattering coefficient varies from 2 to 4 mm-1, the total absorption coefficient varies from 0.1 to 0.3 mm-1 depending on the wavelength. the absorption coefficient is approximately 104 times larger than the reduced scattering coefficient. this results in that the penetration depth of the laser beam is much larger than the reduced scattering length. the absorption coefficient of the dermis and subcutaneous tissue are also shown in fig. the depth of the absorption of the dermis is approximately 0.8 mm and the depth of the absorption of the subcutaneous tissue is approximately 1.2 mm. laser radiation is absorbed predominantly in the dermis and subcutaneous tissue, which explains the low penetration of lllt. the peak absorption of the subcutaneous tissue occurs at approximately 630 nm, which is the same wavelength of the laser used in this study. the peak absorption of the dermis, however, occurs at approximately 670 nm, which is the wavelength of the laser used in this study. 84d34552a1