1 / 32

Laser Cavity

Laser Cavity. M1 M2. 3D cavity. Fig.16-4. Photon Lifetime. Quality Factor and Cavity Finesse. Gaussian Beam. TEM 00 Mode. Amplitude of the Field. Phase Factors. Radius. TEM 0,0. TEM 1,0. TEM 2,0. Higher Order Modes. Fig.17-15.

maya
Download Presentation

Laser Cavity

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Laser Cavity

  2. M1 M2

  3. 3D cavity Fig.16-4

  4. Photon Lifetime

  5. Quality Factor and Cavity Finesse

  6. Gaussian Beam

  7. TEM00Mode

  8. Amplitude of the Field

  9. Phase Factors

  10. Radius

  11. TEM0,0 TEM1,0 TEM2,0 Higher Order Modes

  12. Fig.17-15

  13. Gain Profile and Longitudinal Modes

  14. Spectrum

  15. laser beam and field P n Fabry-perot (In-Plane)

  16. A1 A2 A1 A2 A1’ A2’ a1 b2 T T T S B1 B2 B1 B2 B1’ B2’ b1 a2

  17. A1 A2 a1 b2 T S B1 B2 b1 a2

  18. a1 b2 b1 a2

  19. Building Block Components

  20. Fabry Perot Etalon

  21. Fabry Perot Laser

  22. n2 n1 n2 n1 DBR

  23. Comparison of DQEs of Cleaved and Etched facet EE Lasers Facet Cleaved & Cavity length 350 m One Facet Etched & Cavity length 380 m Mesa width 4 m Mesa width 3 m Mesa width 2 m Mesa Width 22 m DQE = 0.38 for w = 22 m DQE = 0.38 for w = 3 m DQE = 0.31 for w = 4 m DQE = 0.26 for w = 2m

  24. Mesa width 22 m 100 L340 L370 90 L400 80 One facet etched the other cleaved Double Cleaving 70 60 Output Power (mW) 50 40 30 20 10 0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 2 Current Density (A/cm ) Comparison of DQEs of Cleaved and Etched facet EE Lasers (Broad area) DQE = 0.4 for double-cleaved DQE = 0.33 for etched facet

  25. Broad-Area Etched-Facet Laser Cleaved Facet Etched Facet

More Related