Beat frequency between two axial modes of a He-Ne laser with internal mirrors and its dependence on cavity Q

Journal Article · Mon Dec 01 04:00:00 EST 1975 · Appl. Opt., v. 14, no. 12, pp. 2955-2959

DOI:https://doi.org/10.1364/AO.14.002955· OSTI ID:4085267

Balhorn, R; Lebowsky, F; Ullrich, D

Differences of the beat frequencies of a He-Ne laser in two-frequency operation up to 1.8 MHz in the two different states of polarization are observed. These differences of the beat frequencies are explained by the dependence of the beat frequency on the cavity Q, using Lambs' theory. A method of measuring the cavity Q of a passive laser resonator as a function of the direction of polarization of the external exciting radiation is described. The linear dependence of the difference of the beat frequencies $delta$f/subi//subi/,/subi/ and $delta$f/subi/,/subi//subi/ from the difference of the reciprocal values of the cavity Q factors 1/Q/subi//subi/ and 1/Q/subi/, derived from Lamb's theory for the simple case of midtuning, is proved qualitatively by experiments. (AIP)

• Research Organization: Physikalisch-Technische Bundesanstalt, 33 Braunschweig, West Germany
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-020071
• OSTI ID: 4085267
• Journal Information: Appl. Opt., v. 14, no. 12, pp. 2955-2959, Journal Name: Appl. Opt., v. 14, no. 12, pp. 2955-2959; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

*GAS LASERS-- FREQUENCY SELECTION
420300* --Engineering--Lasers
HELIUM
KHZ RANGE 100-1000
LASER CAVITIES
MHZ RANGE
MODE LOCKING
N42210* --Engineering--Facilities & Equipment--Lasers
NEON
POLARIZATION