论文信息 - A Tm:YAG laser for optical frequency measurements: mixing 148 THz light with CO2 laser radiation

A Tm:YAG laser for optical frequency measurements: mixing 148 THz light with CO2 laser radiation

Abstract A single-mode, diode-pumped Tm:YAG laser which is tunable from 2005 to 2035 nm and has an output power of 90 mW at 148 THz (2022 nm) is described. The beat between the frequency of this laser and the fifth harmonic of a CO2 laser transition has been observed using a tungsten-nickel point-contact diode. A signal to noise ratio of up to 20 dB in a 100 kHz bandwidth has been obtained. The Tm:YAG laser will be used as an intermediate frequency source in a chain between a visible frequency and a cesium standard.

Alan A. Madej | John E. Bernard | B. G. Whitford

[1] Clifford R. Pollock,et al. Direct frequency measurements of transitions at 520 THz (576 nm) in iodine and 260 THz (1.15 microm) in neon. , 1983, Optics letters.

[2] F. Riehle,et al. First phase-coherent frequency measurement of visible radiation. , 1996, Physical review letters.

[3] A. Gavrielides,et al. Diode-pumped Tm: YAG solid-state lasers with indirect and direct manifold pumping , 1995 .

[4] Massimo Inguscio,et al. Point contact diode at laser frequencies , 1985 .

[5] Kenneth M. Evenson,et al. Extension of absolute frequency measurements to 148 THz: Frequencies of the 2.0‐ and 3.5‐μm Xe laser , 1975 .

[6] B. Whitford. Uncertainty in Frequency Measurements at 88 THz Made with the NRC Frequency Chain: Frequency of the NRC HeNe/CH 4 Laser. , 1993 .

[7] Clifford R. Pollock,et al. Direct frequency measurement of the I(2)-stabilized He-Ne 473-THz (633-nm) laser. , 1983, Optics letters.

[8] A A Madej,et al. Absolute heterodyne frequency measurement of the (88)Sr(+) 455-THz S-D single ion transition. , 1996, Optics letters.

[9] André Clairon,et al. A CO2 to visible optical frequency synthesis chain: accurate measurement of the 473 THz HeNe/I2 laser , 1993 .