{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1/7/2011 1-1 ECE 415 EXPERIMENT NO. 1 POWER AND BEAM SPOT SIZE OF GAUSSIAN BEAMS PURPOSE : To measure the optical power, to determine the beam diameter, and verify the spatial profile of Gaussian beams. REFERENCES : 1. C. L. Chen, Elements of Optoelectronics & Fiber Optics , Irwin, (1996), Sections 2.4-2.8, pp. 49-74. 2. A. Yoshida, T. Asakura, "A Simple technique for quickly measuring the size of Gaussian laser beam," Optics and Laser Tech ., pp. 273-274, (Dec. 1976). 3. Y. Tridimas, et. al., "Beam waist location and measurement ...," J. Phys. E; Sci. Instru. , Vol. 11, pp. 203-206, (1978). 4. L. D. Dickson, "Rouchi ruling method for measuring Gaussian diameter," Opt. Eng ., Vol. 18, pp. 70-75, (1979). 5. Milton Abramowitz, and I. A. Stegum, Handbook for Math Functions with Formulas, Graphs and Mathematical Tables , Dover Publications, Inc., New York, Chapter 7, pp. 295-329. CAUTION : Do not look into the laser beams with your bare eyes directly . Do not shine laser beams directly into optical power meters either. PROCEDURES : 1. Turn on the laser and let it warm up 5 to 10 minutes before taking any measurement. 2. Set up equipment as shown in Figure 1. Use an optical power meter and neutral density filters (NDF) to measure the laser output.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
1/7/2011 1-2 3. Measure the beam spot size of the laser beam with three different wire sizes, using the technique discussed in Ref. [1] and [2]. (see Figure 2).
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}