Materials, Photonic Devices, and Sensors

Femtosecond laser inscription waveguides in Nd:GdVO4 crystal

[+] Author Affiliations
Shi-Ling Li, Feng-Min Deng, Ze-Ping Huang

Qufu Normal University, College of Physics and Engineering, Shandong Provincial Key Laboratory of Laser and Information Technology, Qufu 273165, China

Opt. Eng. 55(10), 107104 (Oct 14, 2016). doi:10.1117/1.OE.55.10.107104
History: Received August 16, 2016; Accepted September 27, 2016
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Abstract.  Channel waveguides in Nd:GdVO4 crystals were fabricated by using low-repetition-rate (1 kHz) femtosecond laser inscription. The influences of pulse energy and scanning velocity were investigated. Guiding occurs in the surroundings of the focal spot. Single-line, double-line, and double-layer waveguides were realized. The near-field mode images, refractive-index profile reconstruction, and mode analysis of waveguides are presented. The double-line waveguides show strong guidance at 632.8 nm with a loss of about 0.5  dB/mm and an index increase of 3×104. The mode profile asymmetry of single-line waveguide has been improved by using multipass scanning.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Shi-Ling Li ; Feng-Min Deng and Ze-Ping Huang
"Femtosecond laser inscription waveguides in Nd:GdVO4 crystal", Opt. Eng. 55(10), 107104 (Oct 14, 2016). ; http://dx.doi.org/10.1117/1.OE.55.10.107104


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