Efficient 355-nm generation in high-quality CsB/sub 3/O/sub 5/ fabricated by post-growth heat treatments

Borate Nonlinear Optical Crystals for Frequency Conversion

“…In 2005, employing a high-power diode-pumped Nd:YAG laser with a maximum output of 107 W at a pulse repetition rate of 40 kHz and the pulse duration of 150 ns, a 14 W THG output was achieved in an 8 mm long CBO optical devices cut along the angle ( ¼ 90 , w ¼ 43.3 ) for type II THG of 1064 nm light, which is three times higher than that obtained by a commercial LBO crystal under the same experimental conditions [146]. In the same year, a 17.7 W average power output at 355 nm by the THG of 1064 nm light was obtained with the 16 mm type II CBO crystal ( ¼ 90 , w ¼ 42.4 ).…”

“…They successfully eliminated the scattering centers by heating the as-grown crystals at 815-820 C for 2 h and subsequently quenching at a cooling rate of about 60 C/ min [146]. Saji et al proposed that the origin of the scattering centers lay in the CBO phase particles nucleated during the cooling process after the crystal growth.…”

303.5 nm cw Pr:BYF–BBO laser emission under 447 nm all-solid-state Nd:GdVO4–BiBO blue laser pumping

“…In the past 20 years, extensive efforts toward the development of nonlinear-optical crystals have been aimed at producing such a laser by means of frequency conversion of high-power solid-state lasers [10-12, 9, 13-17]. Most of the research on the UV radiation has been focused on pulse lasers [18][19][20][21][22][23][24][25][26]. Very little work about the continuous-wave (cw) UV radiation has been reported.…”

Diode-pumped Nd:GAB self-frequency-doubling green laser at 531 nm

“…Compact lasers that emit a few watts of green power are attractive for display, medical, and spectroscopic applications [11][12][13][14]. Such lasers could also become critical components of an allsolid-state compact UV source [15][16][17][18][19][20]. In recent years, rare earth ions doped nonlinear laser crystals such as Nd 3+ or Yb 3+ doped YAB, GCOB, YCOB, and MgO:LiNbO 3 have been paid much attention [21][22][23][24][25][26][27][28][29][30][31][32][33][34], because they combine laser and nonlinear optical functions into a single crystal, which makes it possible that the red, green, and blue lasers can be produced in a crystal via self-frequency-doubling of fundamental infrared lasers of the active ions and self-sum-frequency-mixing of fundamental and pump lasers.…”