Stable light source

Calibrated output to within 1% for u¥to 72 h is possible over a temperature range 5!C?45!C with the SL𨔀 portable laser light source for field measurements of fiber properties. The 1-lb unit can be equipped with any LED or laser that does not require thermoelectric cooling. Single-mode emitters are available at powers of 100, 200, and

Programmable power