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Part 4. Add a Fold Mirror

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One of the most important features of LaserCanvas is that it represents laser cavities in two dimensions, exactly how they would be built on an optical breadboard. In this section, we add a mirror to fold the cavity.

• With the lens selected, select menu Edit | Insert | Insert Mirror, or click the  Mirror button on the toolbar. Don't worry if your cavity looks a little different to that shown.

By default, a flat mirror is inserted. Its radius of curvature is displayed as 0.

• Grab the end mirror M2 by clicking at the centreline, and drag it down and to the right to fold the cavity.

• 
  To get a better view of the cavity mode, enter the value 100 in the Mode Scale field of the Canvas group in the Property Manager.

The Mode Scale is the magnification factor for the displayed mode size. For example, if the mode is 100 um and the Mode Scale is 100, then the mode is displayed as 100 um x 100 = 10 mm.

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