Accurate absolute frequencies of the ν 1 +ν 3 band of 13 C 2 H 2 determined using an infrared mode-locked Cr:YAG laser frequency comb

Absolute frequency measurements, with up to 1×10−11 level accuracies, are presented for 60 lines of the P and R branches for the ν1+ν3 band of 13C2H2 at 1.5 μm (194 THz). The measurements were made using cavity-enhanced, diode-laser-based saturation spectroscopy. With one laser system stabilized to the P(16) line and a second laser system stabilized to the line whose frequency was to be determined, a Cr:YAG frequency comb was employed to accurately measure the tetrahertz level frequency intervals. The results are compared with recent work from other groups and indicate that these lines would form a basis for a high-quality atlas of reference frequencies for this region of the spectrum.

[1]  Patrick Gill,et al.  High-accuracy frequency atlas of 13C2H2 in the 1.5 μm region , 2005 .

[2]  Y. Awaji,et al.  Accurate optical frequency atlas of the 1.5-µm bands of acetylene , 1996 .

[3]  Gianluca Galzerano,et al.  Frequency stabilization of a 1.54 μm Er–Yb laser against Doppler-free 13C2H2 lines , 2002 .

[4]  M Ohtsu,et al.  Ultranarrow (13)C(2)H(2) saturated-absorption lines at 1.5 microm. , 1994, Optics letters.

[5]  Patrick Gill,et al.  Absolute frequency measurement of a 1.5-microm acetylene standard by use of a combined frequency chain and femtosecond comb. , 2004, Optics letters.

[6]  John L. Hall,et al.  Laser phase and frequency stabilization using an optical resonator , 1983 .

[7]  H. Matsumoto,et al.  Absolute frequency measurement of an acetylene-stabilized laser at 1542 nm , 2005, Digest of the LEOS Summer Topical Meetings, 2005..

[8]  Hirokazu Matsumoto,et al.  Optical frequency link between an acetylene stabilized laser at 1542 nm and an Rb stabilized laser at 778 nm using a two-color mode-locked fiber laser , 2000 .

[9]  R. S. Windeler,et al.  Absolute frequency measurement of acetylene transitions in the region of 1540 nm , 2004 .

[10]  Alan A. Madej,et al.  Development and study of a 1.5 μm optical frequency standard referenced to the P(16) saturated absorption line in the (ν1+ν3) overtone band of 13C2H2 , 2004 .

[11]  J. Chartier,et al.  International Comparison of Iodine Cells , 1992 .

[12]  Günter Steinmeyer,et al.  Carrier-envelope offset phase control: A novel concept for absolute optical frequency measurement and ultrashort pulse generation , 1999 .

[13]  Christine Latrasse,et al.  A 1.5-/spl mu/m absolutely stabilized extended-cavity semiconductor laser , 1990 .

[14]  Hall,et al.  Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis , 2000, Science.

[15]  A. Alcock,et al.  Ultrashort pulse Cr4+:YAG laser for high precision infrared frequency interval measurements. , 2005, Optics express.

[16]  Y Awaji,et al.  High-frequency-stability laser at 1.5 microm using Doppler-free molecular lines. , 1995, Optics letters.

[17]  K. Okumura,et al.  Accurate Frequency Atlas of 1.5 μm Band of Acetylene Measured by a Mode-Locked Fiber Laser , 2004, 2004 Conference on Precision Electromagnetic Measurements.

[18]  R Felder,et al.  Practical realization of the definition of the metre, including recommended radiations of other optical frequency standards (2003) , 2005 .

[19]  Atsushi Yamaguchi,et al.  Toward an accurate frequency standard at 1.5 μm based on the acetylene overtone band transition , 1999, IEEE Trans. Instrum. Meas..

[20]  Y. Chung.  Frequency Stabilized Lasers and Their Applications , 1993 .

[21]  Y Awaji,et al.  Highly precise 1-THz optical frequency-difference measurement of 1.5- mu m molecular absorption lines. , 1995, Optics letters.

[22]  B. Villeneuve,et al.  C2HD and 13C2H2 absorption lines near 1530 nm for semi-conductor-laser frequency locking. , 1994, Optics letters.

[23]  T J Quinn,et al.  Practical realization of the definition of the metre, including recommended radiations of other optical frequency standards (2001) , 2003 .

[24]  G. Herzberg,et al.  Spectra of diatomic molecules , 1950 .