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groups:mg:project_ptb-cavity:mode_matching_second_try [2017/09/07 09:04] – ssauergroups:mg:project_ptb-cavity:mode_matching_second_try [2017/10/04 11:50] (current) – ssauer
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-====== Mode Matching - second try ======+====== Mode Matching - two curve mirrors ======
  
 ==== Mirror configuration ==== ==== Mirror configuration ====
Line 20: Line 20:
 **Step 0: Choose parameter**\\ **Step 0: Choose parameter**\\
   * Wellenlänge: 1542 nm   * Wellenlänge: 1542 nm
-  * Brechungsindex: 1+  * Brechungsindex: 1 (Air)
  
   * Welcher Resonatortyp: linearer Resonator   * Welcher Resonatortyp: linearer Resonator
Line 42: Line 42:
   * Nr. 7: Linse 3 with Brennweite 2.75 mm   * Nr. 7: Linse 3 with Brennweite 2.75 mm
   * Nr. 8: Abstand 2.75 mm   * Nr. 8: Abstand 2.75 mm
 +
 +  * Zielwaist: 5.2 µm
 **Step 4: Playing with the parameters X and Y for the best Überlapp**\\ **Step 4: Playing with the parameters X and Y for the best Überlapp**\\
  
 +Case: //Mirror R2/lense 1 and collimatorlense: 600mm - X//
 +^ Lense focal length Y [mm]                      |  400   |  300   |  **250**   |  200   |  175   |
 +^ Distance between mirror R2 and lense 2 X [mm]  |  179    |  208   |  **243**   |  316   |  357   |
 +^ Überlapp [%]                                   |  83.1  |  97.6  |  **99.5**  |  87.9  |  77.4  |
 +
 +Case: //Mirror R2/lense 1 and collimatorlense: 615mm - X//
 +^ Lense focal length Y [mm]                      |  400   |  300   |  **250**   |  200   |  175   |
 +^ Distance between mirror R2 and lense 2 X [mm]  |  170   |  215   |  **265**   |  332   |  357   |
 +^ Überlapp [%]                                   |  83.2  |  97.9  |  **99.2**  |  87.0  |  76.3  |
  
 +**Step 5: Check what is happend for the wavelength 1560 nm**\\
  
 +No effect!