Tunable single-frequency diode-pumped Nd:YAG ring laser at 1064/532 nm for optical frequency standard applications

Simple wavelength pre-selection and stabilization of the single-frequency operation of a microchip laser

“…9(a)] [4]. This is because the Lyot filter simulta− neously selects two modes (double~2.4 nm and triple~3.6 nm period of the Lyot filter) -one from the 1061.6 nm band and the second one from the 1064.3 nm band of the gain curve of the laser [ (Fig.…”

“…Other− wise, the operation of the laser is unstable (output power fluctuation, uncontrolled mode−hopping). Typically, the wavelength of such lasers is passively controlled by chang− ing: the temperature of the laser [4,8] or the voltage applied to the birefringent crystal [9,10]. This solution is not able to compensate for other factors affecting the operating point, such as the changing of pumping power.…”

“…Several descriptions of vari− ous ways to obtain a single frequency operation of the laser can be found in the literature, but there is still a lack of reports about the simple wavelength scaling [2,3]. Control of the wavelength of a laser usually requires the application of the frequency standard -an element which is the fre− quency discriminator for laser radiation [4,5]. It usually increases the cost and complicates the construction of a laser source.…”

High-power CW single-frequency Nd:YVO4/LBO laser quasi-continuously tuneable over a wide frequency range

“…Correspondingly, lasers based on such crystals can provide tuning of their second harmonic radiation (~ 532 nm) over more than 500 GHz [3]. High output power of these lasers makes them practical for pumping resonant frequency doublers [4] and parametric generators, enabling continuous radiation frequency tuning within both long-and shortwavelength spectrum ranges.…”

Absolute frequency measurement of the iodine-stabilized Ar+ laser at 514.6 nm using a femtosecond optical frequency comb

“…However, due to fast progress in the fields of diode lasers, diode pumped solid state lasers and non-linear optics, systematic search of the best iodine reference line is in progress now [10]. Today's most promising standard based on the iodine reference is the Nd +3 :YAG/SHG diode pumped laser at 532 nm [11][12][13][14], even though the reference line is still broad in this case (approx. 250 kHz).…”