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Optics Letters

Optics Letters


  • Vol. 11, Iss. 6 — Jun. 1, 1986
  • pp: 363–364

Room-temperature continuous-wave operation of a Ti:Al2O3 laser

A. Sanchez, R. E. Fahey, A. J. Strauss, and R. L. Aggarwal  »View Author Affiliations

Optics Letters, Vol. 11, Issue 6, pp. 363-364 (1986)

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Room-temperature cw operation of a Ti:Al2O3 laser has been demonstrated for the first reported time. Laser emission at 770 nm was excited with an all-line Ar-ion laser pump. The maximum output power was 1.6 W. Values of (64 ± 10)% for the internal quantum efficiency and (2.4 ± 0.5)% for the round-trip cavity loss are obtained from the thresholds and slope efficiencies measured with 0.7 and 4.9% output couplers. The cavity-loss value places an upper bound of 0.007 cm−1 on the absorption coefficient of the laser rod for the π polarization (E||ĉ) at 770 nm, compared with 0.73 cm−1 measured at 490 nm, the peak of the Ti3+ pump band.

© 1986 Optical Society of America

Original Manuscript: February 14, 1986
Manuscript Accepted: March 31, 1986
Published: June 1, 1986

A. Sanchez, R. E. Fahey, A. J. Strauss, and R. L. Aggarwal, "Room-temperature continuous-wave operation of a Ti:Al2O3 laser," Opt. Lett. 11, 363-364 (1986)

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  1. P. F. Moulton, J. Opt. Soc. Am. B 3, 125 (1986). [CrossRef]
  2. P. F. Moulton, Solid State Research Rep. DT1C-AD-A140027/4 (1983:3) (Lincoln Laboratory, Lexington, Mass., 1983), p. 17.
  3. P. Lacovara, L. Esterowitz, M. Kokta, IEEE J. Quantum Electron. QE-21, 1614 (1985). [CrossRef]
  4. R. E. Fahey, A. J. Strauss, A. Sanchez, “Growth and characterization of Ti:Al2O3 crystals,” Solid State Research Rep. (1985:4) (Lincoln Laboratory, Lexington, Mass., to be published).
  5. R. L. Aggarwal, A. Sanchez, R. E. Fahey, A. J. Strauss, “Magnetic and optical measurements on Ti:Al2O3 crystals for laser applications: concentration and absorption cross section of Ti3+ ions,” Appl. Phys. Lett. (to be published).
  6. H. W. Kogelnik, E. P. Ippen, A. Dienes, C. V. Shank, IEEE J. Quantum Electron. QE-8, 373 (1972). [CrossRef]

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