491 nm generation by sum-frequency mixing of diode pumped neodymium lasers

Abstract

We present three different dual-wavelength laser architectures to obtain cw blue radiations. They are based on diode-pumped Nd-doped crystals lasing on the 4F3/2-4I11/2 and 4F3/2-4I9/2 transitions. Blue radiations were achieved by intracavity sum frequency operation in a BiB3O6 crystal. We report a maximum output blue power of 303 mW at 491 nm for a pump power of 10 W.

Diode-pumped CW frequency-doubled Nd:CNGG-BiBO blue laser at 468 nm

“…These past few years, there has been extensive research to find more efficient and more compact lasers. Thus, new lasers were designed to reach new wavelengths, for example in the yellow range [1][2][3][4][5], or to improve sources already used, as in the blue range [6][7][8][9]. Diode-pumped solidstate (DPSS) lasers operating in the blue spectral range have a large number of applications ranging from highdensity optical data storage to phototherapy and medical diagnostics.…”

Diode-pumped Nd:YVO4-Nd:CNGG crystals blue laser at 462 nm by intracavity sum-frequency-mixing

“…The other way is to develop lasers emitting at the lowest wavelength possible in the near infrared [12] and to perform nonlinear conversion. Classical wavelengths of frequency doubled solid-state blue lasers are 473 nm (Nd:YAG laser) [13], 457 nm (Nd:YVO 4 laser) [14], 456 nm (Nd:GdVO 4 laser) [15] and 458 nm (Nd:LuVO 4 laser) [9]. These lasers are efficient and powerful, and it could be interesting to extend these sources to other wavelengths, in particular to deeper blue.…”

CW light sources at the 589 nm sodium D2 line by sum-frequency mixing of diode pumped neodymium lasers

“…This resonator based on two different laser crystals, one for each wavelength. This "dualwavelength operation in two crystals" configuration has Figure 1 (online color at www.lphys.org) Experimental setup of the intracavity-sum-frequency mixing laser at 589 nm already been carried out in the blue range [10], but to our knowledge, it is the first time that it is implemented in the yellow range. Dual-wavelength operation was obtained with the Nd:YLF (1053 nm) and the Nd:YAG (1338 nm) crystals, using type-I critical phase matching LBO, 589 nm CW yellow-orange laser was obtained by 1053 and 1338 nm intracavity sum-frequency mixing.…”