Measurements of photovoltaic constant and photoconductivity in Ce,Mn:LiNbO3 crystal

✍ Scribed by Bonghoon Kang; Bum Ku Rhee; Gi-Tae Joo; Sunkyun Lee; Ki-Soo Lim

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 145 KB
• Volume: 266
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2006.04.064

✦ Synopsis

We report photovoltaic constant and photoconductivity of Ce,Mn:LiNbO 3 crystals. Using the DC electric field dependence of nonphase-matched second-harmonic generation, photovoltaic constant and photoconductivity were deduced from an analysis of the observed relaxation behavior of space-charge field at two different light intensities for photorefraction. In Ce,Mn:LiNbO 3 crystal, the photovoltaic constant and photoconductivity were determined to be 1.0 • 10 À8 A/W and 1.1 • 10 À16 X À1 cm À1 at the intensity of 0.3 mW/cm 2 , respectively. The photovoltaic constant at 514 nm is at least three times larger compared to that in iron doped LiNbO 3 .