Written Laser Hair Removal Practice Exam

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What is the wavelength of Alexandrite lasers?

  1. 694nm

  2. 755nm

  3. 810nm

  4. 1064nm

The correct answer is: 755nm

Alexandrite lasers typically operate at a wavelength of 755nm. Option A, which is 694nm, may be confused with the wavelength of Ruby lasers, which also have a similar name. Option C, 810nm, is the wavelength used for most diode lasers, while option D, 1064nm, is the wavelength for NdYAG lasers. These wavelengths are not specific to Alexandrite lasers, making them incorrect options for this question.

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