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Variable-aperture calorimeter for an unstable resonator. Interim report

Technical Report ·
OSTI ID:7216716
A new technique for measuring the output power from a cw edge-coupled unstable resonator has been developed and applied to a cw DF laser. An internal-cavity calorimeter was used that permits measurement of output power with a variable rectangular-mode geometry while containing the radiation inside the resonator. The variable aperture calorimeter-absorbing scraper (VACAS) device consists of an absorbing copper plate calorimeter assembly, which replaces the 45-deg output coupling mirror of a conventional edge-coupled unstable cavity.
Research Organization:
Aerospace Corp., El Segundo, CA (USA). Aerophysics Lab.
OSTI ID:
7216716
Report Number(s):
AD-A-026576
Country of Publication:
United States
Language:
English

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