[25a-P04-1~1] 15.7 Crystal characterization, impurities and crystal defects

[25a-P04-1] Photoluminescence evaluation of ruby using a pulsed LED stabilized by duty ratio control

〇(M2)Ami Hitomi¹, Ririka Watanabe², Arisa Mori², Ayaka Kojima², Toru Katsumata^1,2, Hiroaki Aizawa², Takeshi Matsumoto³ (1.Toyo Univ. Graduate School, 2.Toyo Univ., 3.Matsumoto Precision Co.)

Keywords:

Ruby,Photoluminescence spectrum,Regulated pulsed LED light source

In order to stabilize and improve the performance of Photoluminescence(PL) measurement using an LED light source, evaluated the PL spectrum of ruby using by optimally adjusted the duty ratio of the PWM (Pulse Width Modulation) method. Measurement stability was improved by adjusting the lighting frequency of the LED light source. By adjusting the duty ratio, it was possible to reduce temporal changes in the emission intensity of the LED light source, making stable PL measurements possible.