Highly reliable 40-W cw InGaAlAs/GaAs 808-nm laser bars

Highly efficient reliable lasers for 830-nm wavelength range

“…Nowadays the lifetime of at least several thousand hours is required for that kind of bars. Several groups report on AlGaAs-based laser performance meeting the requirements discussed above 27,28 Recently there were reports on phosphorus-based lasers meeting the same criteria29'30. CW Current, A Our lifetime test data collected for AlGaAs-and P-based lasers indicate that with an appropriate design and stringent manufacturing tolerances both material systems can produce bars with 10,000 hours estimated lifetime at 40 W CW output.…”

Long-term reliability studies of high-power 808 nm tapered diode lasers with stable beam quality

“…Experiments on 808 nm BA laser bars showing stable operation for ageing times of 3000 and 6000 h are reported in [2,3], respectively. A maximum lifetime of 7500 h for a laser bar is demonstrated in [4]. The quantum wells of all these diodes contained indium to increase the long-term stability (InAlGaAs or InGaAsP); for the same purpose, some of these lasers had Al-free quantum wells and waveguides [1,3].…”

CASE REPORT Therapeutic undermining of scars (Subcision®)

“…The treatment of indented or atrophic scarring is difficult. Treatment options generally include augmentation procedures with autologous or non‐autologous materials, 1–5 or resurfacing the skin by laser, 6,7 or dermabrasion 8,9 . However, the value of undermining scars as an isolated therapeutic manoeuvre has recently been suggested to improve the contour of atrophic scarring.…”