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--- groups:mg:experiment:laser:383nmlaser [2018/06/07 12:11] – pgehrke
+++ groups:mg:experiment:laser:383nmlaser [2022/04/01 09:07] (current) – fim
@@ Line 14: / Line 14: @@
   * Injection Power: 32 mW
   * Power behind 30dB Isolator: 1.05 W
+  * Originally this TA was used: EYP-TPA-0765-01500-3006-CMT03-0000. Is this still true?
 **Fiber**
@@ Line 43: / Line 44: @@
   * PDH-Method
   * Error signal at about 20 MHz
 {{ :groups:mg:experiment:laser:mg_aufbau.png?400 |}}
+===== Stabilisation: Laser 4 - Potassium =====
+{{ :groups:mg:experiment:laser:image_2022-04-01_110522.png?400|}}
+Dopplerfree Saturation Spectroscopy on D1 line of Potassium:
+  * 1st the two beams with similar intensity are generated by the beam sampler and are send trough the glas cell
+  * one part of the initial beam is going trough the sampler to a double pass aom and then in the other direction trough the glas cell, crossing only one beam. Important: the beam coming from the aom must have a much higher intensity!
+  * the first two beams, coming from the sampler trough the cell are than monitored by the PD. The signal is substracted
+  * in or case e use the aom to create the peak on one side of the mainpeak. This is important for the lock-in scheme
+{{ :groups:mg:experiment:laser:dopplerfreespectrosc.gif?700|}}