A "'strontium vapor laser "'is a laser that produces at its output, high-intensity pulsed light at a wavelength of 430.5 nm in the blue-violet region of the visible spectrum via vaporized strontium metal gas contained within a glass tube.
42.
"' Intense pulsed light "'( "'IPL "') is a technology used by cosmetic and medical practitioners to perform various skin treatments for aesthetic and therapeutic purposes, including hair removal, photorejuvenation ( e . g . the treatment of skin pigmentation, sun damage, and thread veins ) as well as to alleviate dermatologic diseases such as acne.
43.
The authors described use of the device to decrease discomfort before procedures including supplementing anesthesia with the injection of triamcinolone acetonide into the proximal nail fold for psoriasis, decreasing discomfort during a Restylane injection of the nasolabial fold, making an intense pulsed light ( IPL ) facial treatment easier by reducing pain during the procedure, and throughout axillary hyperhidrosis treatment with botulinum toxin.
44.
:: * But the real key to making a sufficiently-sensitive detector that doesn't care about slight changes in light level and slight electrical changes in the circuit is probably to use a pulsing light source and to amplify those "'variations "'in light seen by the phototransistor and maybe even LED as your light source and drive it from an oscillator that makes it flash at a certain frequency.
