External Cavity Diode Laser (ECDL)

rahix commented

2025-08-18 13:29:46 +00:00

Owner

An external cavity diode laser is an arrangement to much improve the frequency stability of a diode laser. In its simplest form, it is built from a laser diode and a diffraction grating which reflects light of a selected wavelength back into the diode to increase selectivity for the respective modes.

Resources

Caltech Laserprimer explanation of an ECDL setup
Mode stability of external cavity diode lasers
100mW+ single mode external cavity diode lasers (but we do not need high power)

An external cavity diode laser is an arrangement to much improve the frequency stability of a diode laser. In its simplest form, it is built from a laser diode and a diffraction grating which reflects light of a selected wavelength back into the diode to increase selectivity for the respective modes. #### Resources - [Caltech Laserprimer](https://web.archive.org/web/20241202222445/http://hololaser.kwaoo.me/laser/lit/laserprimer.pdf) explanation of an ECDL setup - [Mode stability of external cavity diode lasers](https://cpb-ap-se2.wpmucdn.com/blogs.unimelb.edu.au/dist/5/118/files/2015/11/Saliba-et-al.-2009-Applied-Optics-Mode-stability-of-external-cavity-diode-lasers-1buob6t.pdf) - [100mW+ single mode external cavity diode lasers](https://web.archive.org/web/20241216140301/http://hololaser.kwaoo.me/laser/ECDL.html) (but we do not need high power)

rahix added the

Type

Equipment

label 2025-08-18 13:29:46 +00:00

forgejo-actions commented

2025-08-18 13:29:54 +00:00

Partial Techtree

flowchart BT

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    1["<a href='https://git.fa-fo.de/fafo/techtree/issues/87' target='_blank'>#87</a> | MISSING<br/><i>Equipment</i><br/><b>Diode Laser</b>"]
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    2["<a href='https://git.fa-fo.de/fafo/techtree/issues/85' target='_blank'>#85</a> | ASSIGNED<br/><i>Development</i><br/><b>Laser Diode Driver/Controller</b>"]
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    3["<a href='https://git.fa-fo.de/fafo/techtree/issues/82' target='_blank'>#82</a> | MISSING<br/><i>Equipment</i><br/><b>Coherent Light Source</b>"]
    1 --> 2
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Digest: f9d572d490e58fb93e3fbe02afc9998db296fd05c28b0d0da554ecc971fa0b6b; Last Updated: 2025-10-05 17:01:59

## Partial Techtree ```mermaid flowchart BT classDef eoi fill:#fff, stroke:#000, color:#000; classDef dependant fill:#fff, stroke:#888, color:#888; classDef dep_missing fill:#fcc, stroke:#800, color:#000; classDef dep_assigned fill:#ffa, stroke:#a50, color:#000; classDef dep_completed fill:#afa, stroke:#080, color:#000; 0:::eoi 0["<a href='https://git.fa-fo.de/fafo/techtree/issues/83' target='_blank'>#83</a> | MISSING Equipment External Cavity Diode Laser (ECDL)"] 1:::dep_missing 1["<a href='https://git.fa-fo.de/fafo/techtree/issues/87' target='_blank'>#87</a> | MISSING Equipment Diode Laser"] 2:::dep_assigned 2["<a href='https://git.fa-fo.de/fafo/techtree/issues/85' target='_blank'>#85</a> | ASSIGNED Development Laser Diode Driver/Controller"] 3:::dependant 3["<a href='https://git.fa-fo.de/fafo/techtree/issues/82' target='_blank'>#82</a> | MISSING Equipment Coherent Light Source"] 1 --> 2 0 --> 1 3 --> 0 ``` Digest: f9d572d490e58fb93e3fbe02afc9998db296fd05c28b0d0da554ecc971fa0b6b; Last Updated: 2025-10-05 17:01:59

rahix added a new dependency 2025-08-18 13:30:08 +00:00

#82 Coherent Light Source

rahix referenced this issue

2025-08-18 13:32:52 +00:00

Stabilized Helium-Neon Laser #84

rahix added a new dependency 2025-08-18 13:45:17 +00:00

#85 Laser Diode Driver/Controller

rahix added a new dependency 2025-08-18 14:03:25 +00:00

#87 Diode Laser

rahix removed a dependency 2025-08-18 14:03:31 +00:00

#85 Laser Diode Driver/Controller