Differences

This shows you the differences between two versions of the page.

--- groups:mg:ring-down_box [2018/01/18 15:30] – ssauer
+++ groups:mg:ring-down_box [2018/09/04 12:40] (current) – removed ssauer
@@ Line 1: / Line 1: @@
-====== Ring-down Box ======
-===== Application of the ring-down box =====
-You can measure the finesse of a resonator with the ring-down box **without** locking the resonator!
-==== Advantages ====
-  - super fast (see characterization)
-  - without locking the resonator
-{{ :groups:mg:ring-down-box_ohnelambda4.png?800|}}
-==== Measurement Method ====
-==== Evaluation ====
-Use this formula to analyse the datapoints:\\ y(x)=A*exp^(-x/t)+y0 with x:=time, t:= delay time\\
-Afterwards calculate the finesse with F=2pi*t*FSR with FSR:=free spectral range.
-===== Electronic setup =====
-==== Explanation of the operating principle ====
-  * Electronic drawing (PDF-file)
-Bilder rein mit dem Kurbven etc.
-==== Characterization====
-==== List of components ====
-  * Inverter: LT1363
-    * Invert negativ input voltage to positiv
-    * {{ :groups:mg:1363fa.pdf |Datasheet_LT1363}}
-    * Power supply: +/-5V
-  * Comparator: AD8561
-    * Compare input voltage and threshold value
-    * {{ :groups:mg:ad8561.pdf |Datasheet_AD8561}}
-    * Power supply: +/-5V
-    * High speed timing: 7ns @ 5V
-  * Flip-Flop: SN74HC74
-    * Output of trigger
-    * {{ :groups:mg:sn74hc74.pdf |Datasheet_SN74HC74}}
-    * Power supply: +5V
-    * High speed timing: 15ns