Laboratory work, TE or TM polarization?

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SUMMARY

The discussion focuses on identifying the Transverse Electric (TE) and Transverse Magnetic (TM) modes of an infrared (IR) laser configured for a single longitudinal mode and close to the TEM00 transverse mode. The user possesses a polarizer and a half-wave plate to assist in this identification. The challenge lies in the invisibility of the IR beam to the naked eye, necessitating the use of a power meter for detection. The thread on Physics Forums provides additional insights and methods for determining the TE and TM modes.

PREREQUISITES
  • Understanding of laser polarization concepts
  • Familiarity with TE and TM mode definitions
  • Knowledge of optical components such as polarizers and half-wave plates
  • Experience with power meters for measuring laser output
NEXT STEPS
  • Research the principles of laser polarization and its impact on TE and TM modes
  • Learn how to effectively use a polarizer and half-wave plate in optical experiments
  • Study the characteristics of TEM00 mode in laser systems
  • Explore safety protocols for working with infrared lasers
USEFUL FOR

Laser physicists, optical engineers, and researchers working with infrared lasers who need to understand polarization modes and their applications in experimental setups.

nordmoon
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I have an IR laser for which I want to find the TE (Transverse Electrical) vs. TM (Transverse Magnetical) mode.

I know that the laser has linear polarization, and is configured for a single longitudinal mode with transverse mode close to TEM00.

I have a polarizer (not exactly but nearby the wavelength of the laser) and a half-wave plate.
Since the laser is in IR its hard to see the beam with your eyes. I can use a power meter but how do I know when its TE and TM?

Any help would be very much appreciated.
 
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