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= X end laser = <<TableOfContents(2)>>
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|| || Innolight Mephisto ||
|| Part Number || ||
|| Power || 1 W ||
|| Nominal Current || 2.0 A ||
|| Modulation Frequency fm|| 216.075 kHz ||
|| PM/AM ratio at fm || 6e+5 [rad/RIN]||		 = X end laser (Innolight) =
== Nominal Parameters ==
 || || Innolight Mephisto ||
 || Part Number || ||
 || Power || 1 W ||
 || Nominal Current || 2.0 A ||
 || Modulation Frequency fm|| 216.075 kHz ||
 || PM/AM ratio at fm || 6e+5 [rad/RIN]||
Line 12: Line 14:
attachment:PMAM_innolight.png  . attachment:PMAM_innolight.png
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== Temperature and beatnote == == Temperature and beatnote (PSL vs X end laser ) ==

  . attachment:temp_xend_psl.png


== Laser Frequency vs Crystal Temperature ==
 . Plots of the laser frequency vs temperature (measured by beating against a second laser) are shown below. [http://nodus.ligo.caltech.edu:8080/40m/2794 Also, see the elog here].

 || '''Laser''' || '''df/dT''' || '''df/dV - within a mode''' || '''df/dV - average''' ||
 || Innolight || 3.3MHz/mK || - || -||


 . <<ImageLink(innolight_temperature_sweep.png,Upgrade 09/GreenLock/Control Information/innolight_temperature_sweep,height=400)>>
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= Y end laser =
|| || LightWave ||
|| Part Number || ||
|| Power || 700m W (?)||
|| Nominal Current || ||
|| Modulation Frequency fm|| - ||
|| PM/AM ratio at fm || - ||		 --------
= Y end laser (Lightwave) =
== Nominal Parameters ==

 || || Lightwave ||
 || Part Number || ||
 || Power || 700m W (?)||
 || Nominal Current || ||
 || Modulation Frequency fm|| - ||
 || PM/AM ratio at fm || - ||
Line 30: Line 48:
attachment:PMAM_lightwave.png  . attachment:PMAM_lightwave.png

== Temperature and beatnote (PSL vs Y end laser ) ==
=== Coarse scan ===
 . attachment:temp_yend_psl_coarse.jpg

=== Fine scan ===
 . attachment:temp_yend_psl.jpg

=== Fitting results ===
 . Y_arm_Temp_meas = 0.95152*T_PSL + 3.8672

 . Y_arm_Temp_set = 0.87326*T_PSL + 6.9825

== Laser Frequency vs Crystal Temperature ==
 . Plots of the laser frequency vs temperature (measured by beating against a second laser) are shown below. [http://nodus.ligo.caltech.edu:8080/40m/2794 Also, see the elog here].

 || '''Laser''' || '''df/dT''' || '''df/dV - within a mode''' || '''df/dV - average''' ||
 || Lightwave || 2.8MHz/mK || 5GHz/V || 1.6GHz/V ||


 . <<ImageLink(lightwave_temperature_sweep.png,Upgrade 09/GreenLock/Control Information/lightwave_temperature_sweep,height=400)>>



[[BR]]

Contents

  1. X end laser (Innolight)
    1. Nominal Parameters
    2. Modulations
    3. Temperature and beatnote (PSL vs X end laser )
    4. Laser Frequency vs Crystal Temperature
  2. Y end laser (Lightwave)
    1. Nominal Parameters
    2. Modulations
    3. Temperature and beatnote (PSL vs Y end laser )
    4. Laser Frequency vs Crystal Temperature

X end laser (Innolight)

Nominal Parameters

  		•

    Innolight Mephisto

    Part Number

    Power

    1 W

    Nominal Current

    2.0 A

    Modulation Frequency fm

    216.075 kHz

    PM/AM ratio at fm

    6e+5 [rad/RIN]

Modulations

  • attachment:PMAM_innolight.png

Temperature and beatnote (PSL vs X end laser )

  • attachment:temp_xend_psl.png

Laser Frequency vs Crystal Temperature

  • Plots of the laser frequency vs temperature (measured by beating against a second laser) are shown below. [http://nodus.ligo.caltech.edu:8080/40m/2794 Also, see the elog here].

    Laser

    df/dT

    df/dV - within a mode

    df/dV - average

    Innolight

    3.3MHz/mK

    -

    -

  • innolight_temperature_sweep.png

BR BR BR

Y end laser (Lightwave)

Nominal Parameters

  		•

    Lightwave

    Part Number

    Power

    700m W (?)

    Nominal Current

    Modulation Frequency fm

    -

    PM/AM ratio at fm

    -

Modulations

  • attachment:PMAM_lightwave.png

Temperature and beatnote (PSL vs Y end laser )

Coarse scan

  • attachment:temp_yend_psl_coarse.jpg

Fine scan

  • attachment:temp_yend_psl.jpg

Fitting results

  • Y_arm_Temp_meas = 0.95152*T_PSL + 3.8672
  • Y_arm_Temp_set = 0.87326*T_PSL + 6.9825

Laser Frequency vs Crystal Temperature

  • Plots of the laser frequency vs temperature (measured by beating against a second laser) are shown below. [http://nodus.ligo.caltech.edu:8080/40m/2794 Also, see the elog here].

    Laser

    df/dT

    df/dV - within a mode

    df/dV - average

    Lightwave

    2.8MHz/mK

    5GHz/V

    1.6GHz/V

  • lightwave_temperature_sweep.png

BR

Advanced_Techniques/Green_Locking/Lasers (last edited 2012-01-03 23:02:39 by localhost)