meta data for this page
  •  

Differences

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

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
groups:mg:clocklaser [2018/06/15 12:21] – [Laserdiode] ssauergroups:mg:clocklaser [2018/08/31 13:25] (current) – removed ssauer
Line 1: Line 1:
-===== Clocklaser ===== 
-==== Laserdiode ==== 
-  * {{ :groups:mg:201705051620.pdf |Datasheet [Serial Number: BA-02465]}} 
-  * {{ :groups:mg:201705051619.pdf |Datasheet [Serial Number: BA-02464]}} 
  
-  * Temperature Laserdiode:  
-    * <fc #ff0000>XX</fc> [2018] 
-  * Typical Current Laserdiode: 
-    * 96 mW  
-==== Turning on the Laser ==== 
-We use toptica electronics: 
-  - Turning the main-key to on. The LED´s from the temperature control will go on! 
-  - Push the green button. The green LED from the button will go on! 
-  - Switch on the toggle (=Kippschalter) from the laserdiode. The green LED from the laserdiode module will go on! 
-  - Switch on the toggle from the TA, if he is seeded! The green LED from the TA module will go on! 
-If the switches are on, then not steps 3. & 4.:-) 
- 
-==== Turning off the Laser ==== 
-Both toggles to switch to off(Laserdiode/TA) is not required!  
-  - Push the red button. The green LED will go out! 
-  - Turning the main-key to "mains" 
- 
-=== Turning off the Laserdiode === 
-  - Switch off the toggle from the TA. The green LED from the TA module will go out! 
-  - Switch off the toggle from the laserdiode. The green LED from the laserdiode module will go out! 
- 
-=== Turning off or on only the TA === 
-  - Switch off or on the toggle from the TA. The green LED from the TA module will go out or on! 
- 
-====== Locking to the resonators ======   
-  - **Put a Paper infront R1!!!** 
-  - Check Laserdiodepower after Laserhousing 
-  - TA Lock: If the incoupling is good -> 1A - after TA: ~200mW 
-    - Nessasray lock power: 200mW 
-  - Intensity Lock 
-    - after Isolator ~120müW 
-      - otherwise improve the optical way to the Isolator for more power 
-    - mit Output Offset des Intenstitäts-PID auf 100müW herunterdrehen 
-  - ** HENCE:** Check **always** Power after Isolator of R1: **not more than 100müW!!!** 
-  - Only aktivate PDH/TA, if the power is 70-100müW after the Isolator of R1 
-  - Tune the Piezo to TEM00 
-  - Lock RAM 
-  - Lock Fiberstabilization 
- 
-===== Littmann design ===== 
-{{ :groups:mg:img_0260.jpg?300|}} 
-{{ :groups:mg:img_0259.jpg?300|}} 
- 
-**Typical efficiencies at 916 nm:** 
-  * Isolators: 80 % 
-  * AOMs: 50-60 % 
-  * Fiber coupling: 50 %  
- 
-**Typical values for the laser:** 
-  * Frequency: 327.5293 THz (doubled upstairs directly behind SHG: 655.058 566 THz) 
-  * Power after ECDL: 
-    * ~12 mW (@ ~90 mA) [2016] 
-    * ~<fc #ff0000>XX</fc> mW (@ ~96 mA) [2016] 
-  * Power after TA:  
-    * ~200 mW (@ ~1000 mA) [2016] 
-    * ~<fc #ff0000>XX</fc> mW (@ ~1165 mA) [2018] 
-  * TA current should be <1.2A otherwise the fiber stabilization will soar (=aufschwingen) 
- 
-**Typical values in front fibers:** 
-  * Power before fiber for wavemeter/comb/mode analysis cavity: 
-    * ~12 mW [2016] 
-    * ~<fc #ff0000>XX</fc> mW [2018] 
-  * Power before AtomLabFiber:  
-    * ~30 mW -> 15 mW upstairs before TA [2016- without fiber stabilization] 
-    * ~<fc #ff0000>XX</fc> mW -> 20 mW upstairs before TA [2018] 
-  * Power to R2:  
-    * ~2.5 mW [2016] 
-    * ~<fc #ff0000>XX</fc> mW [2018] 
- 
-**Typical values for the resonators:** 
-  * In front of telescope: 2.2 mW 
-  * In front of AOM: 1.5 mW 
-  * In front of fiber: 450 µW 
-  * 100 µW between Isolator and BS 
-  * 50 µW in front of Resonator 
- 
-**Typical values for locking signals:** 
-  * PDH error signal locked ~500 mV PP / unlocked ~200 mV PP 
-  * Intensity Error signal ~2 mV PP / DC:  
-  * Fiber Stabilization Locked ~200 mV PP / Unlocked ~2 Volt PP 
- 
- 
-**Manuals and Datasheets**