This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 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. 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.  and . (see Figure 2). using the technique discussed in Ref....
View Full Document
This note was uploaded on 02/12/2012 for the course ECE 415 taught by Professor Lab during the Spring '11 term at Purdue University-West Lafayette.
- Spring '11