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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 30 — Oct. 20, 2013
  • pp: 7288–7294

Embedded optical waveguides fabricated in SF10 glass by low-repetition-rate ultrafast laser

Jing Bai, Xuewen Long, Xin Liu, Guangwen Huo, Wei Zhao, Razvan Stoian, Rongqing Hui, and Guanghua Cheng  »View Author Affiliations


Applied Optics, Vol. 52, Issue 30, pp. 7288-7294 (2013)
http://dx.doi.org/10.1364/AO.52.007288


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Abstract

Symmetric embedded waveguides were fabricated in heavy metal oxide SF10 glass using slit-shaped infrared femtosecond laser writing in the low-repetition frequency regime. The impact of the writing parameters on the waveguide formation in the transverse writing scheme was systemically studied. Results indicate that efficient waveguides can be inscribed in a wide parameter space ranging from 500 fs to 1.5 ps pulse duration, 0.7–4.2 μJ pulse energy, and 5μm/s to 640μm/s scan speed and pointing out the robustness of the photoinscription process. The refractive index profile reconstructed from the measured near field pattern goes up to 103. In addition, propagation losses of the waveguides are tolerable, with the lowest propagation loss estimated at 0.7dB/cm. With a 5μm/s scan speed and 3.5 μJ pulse energy in a high-dose regime, few-mode guiding was achieved in the waveguide at 800 nm signal injection wavelength. This is due to a combination of increased refractive index in the core of the trace and the appearance of a depressed cladding.

© 2013 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(220.4000) Optical design and fabrication : Microstructure fabrication
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 29, 2013
Manuscript Accepted: September 23, 2013
Published: October 16, 2013

Citation
Jing Bai, Xuewen Long, Xin Liu, Guangwen Huo, Wei Zhao, Razvan Stoian, Rongqing Hui, and Guanghua Cheng, "Embedded optical waveguides fabricated in SF10 glass by low-repetition-rate ultrafast laser," Appl. Opt. 52, 7288-7294 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-30-7288

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