Abstract

We report the generation of up to 0.7 mW of narrow-linewidth (<60-MHz) radiation at 3.3μm by difference frequency mixing of a Nd:YAG-seeded 1.6-W Yb fiber amplifier and a 1.5-μm diode-laser-seeded 0.6-W Er/Yb fiber amplifier in periodically poled LiNbO<sub>3</sub> . A conversion efficiency of 0.09%/W (0.47 mWW<sup>-2</sup> cm<sup>-1</sup>) was achieved. A room-air CH<sub>4</sub> spectrum acquired with a compact 80-m multipass cell and a dual-beam spectroscopic configuration indicates an absorption sensitivity of ±2.8 × 10<sup>-5</sup> (±1σ), corresponding to a sub-parts-in- 10<sup>9</sup>(ppb) CH<sub>4</sub> sensitivity (0.8 ppb).

© 1999 Optical Society of America

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1999

1998

1997

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

1996

1995

1992

Agrawal, G. P.

G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Francisco, Calif., 1989).

Balakrishnan, A.

Benko, Z.

Boller, K. J.

Burns, W. K.

Canarelli, P.

Capasso, F.

F. Capasso, C. Gmachl, D. L. Sivco, and A. Y. Cho, Phys. World 12, 27 (1999).

Cho, A. Y.

F. Capasso, C. Gmachl, D. L. Sivco, and A. Y. Cho, Phys. World 12, 27 (1999).

Curl, R. F.

DeMars, S.

Fried, A.

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

Gilpin, T.

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

Gmachl, C.

F. Capasso, C. Gmachl, D. L. Sivco, and A. Y. Cho, Phys. World 12, 27 (1999).

Goldberg, L.

Grundkötter, W.

Haase, C.

Henry, B.

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

Herrmann, H.

Hofmann, D.

Klein, M. E.

Kliner, D. A. V.

Koplow, J.

Lancaster, D. G.

L. Goldberg, J. Koplow, D. G. Lancaster, R. F. Curl, and F. K. Tittel, Opt. Lett. 23, 1517 (1998).

D. G. Lancaster, D. Richter, and F. K. Tittel, “Portable fiber coupled diode laser based sensor for multiple trace gas detection,” Appl. Phys. B (to be published).

Lang, R. J.

Lee, D. H.

McElhanon, R. W.

Mehuys, D. G.

Meyn, J. P.

Nam, D. W.

Richter, D.

D. G. Lancaster, D. Richter, and F. K. Tittel, “Portable fiber coupled diode laser based sensor for multiple trace gas detection,” Appl. Phys. B (to be published).

Ricken, R.

Sanders, S.

Schreiber, G.

Sewell, S.

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

Sivco, D. L.

F. Capasso, C. Gmachl, D. L. Sivco, and A. Y. Cho, Phys. World 12, 27 (1999).

Sohler, W.

Tittel, F. K.

L. Goldberg, J. Koplow, D. G. Lancaster, R. F. Curl, and F. K. Tittel, Opt. Lett. 23, 1517 (1998).

P. Canarelli, Z. Benko, R. F. Curl, and F. K. Tittel, J. Opt. Soc. Am. B 9, 197 (1992).

D. G. Lancaster, D. Richter, and F. K. Tittel, “Portable fiber coupled diode laser based sensor for multiple trace gas detection,” Appl. Phys. B (to be published).

Waarts, R. G.

Wallenstein, R.

Webjorn, J.

Welch, D. F.

Werle, P.

P. Werle, Spectrochim. Acta A 54, 197 (1998).

Wert, B. P.

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

Appl. Phys. B

D. G. Lancaster, D. Richter, and F. K. Tittel, “Portable fiber coupled diode laser based sensor for multiple trace gas detection,” Appl. Phys. B (to be published).

J. Geophys. Res.

A. Fried, S. Sewell, B. Henry, B. P. Wert, and T. Gilpin, J. Geophys. Res. 102, 6253 (1997).

J. Opt. Soc. Am. B

Opt. Lett.

Phys. World

F. Capasso, C. Gmachl, D. L. Sivco, and A. Y. Cho, Phys. World 12, 27 (1999).

Spectrochim. Acta A

P. Werle, Spectrochim. Acta A 54, 197 (1998).

Other

G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Francisco, Calif., 1989).

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