Diode laser pumped blue-light source at 473 nm using intracavity frequency doubling of a 946 nm Nd:YAG laser

Risk, W. P.; Pon, R.; Lenth, W.

doi:10.1063/1.101394

Cited by 51 publications

(5 citation statements)

References 8 publications

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“…Thus, in principle, blue laser light can be generated by pumping NYAB crystals with commercial low-current laser diodes. In fact, Risk et al 15 demonstrated this blue light generation by using KNbO 3 nonlinear crystal placed inside a diode-pumped Nd 3ϩ :YAG cavity. Nevertheless, NYAB is the first material in which this sum-frequency mixing phenomenon is carried out in the same material.…”

Section: Introductionmentioning

confidence: 99%

Red, blue, and green laser-light generation from the NYAB nonlinear crystal

Jaque

Capmany

1999

Opt. Eng

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Continuous wave red, green, and blue laser light are generated under IR-pumping crystals of Nd 3ϩ :YAl 3 (BO 3) 4 by a Ti:sapphire laser. The red (669-nm) and green (532-nm) radiations are obtained by self-frequency doubling of the fundamental laser lines at 1338 nm (4 F 3/2 → 4 I 13/2 channel) and 1062 nm (4 F 3/2 → 4 I 11/2 channel), respectively. Blue laser radiation (458 nm) is achieved by self-sum-frequency mixing of the main laser line at 1062 nm and the pumping radiation at 807 nm. The main spectroscopic and nonlinear properties of this crystal are included. In addition, a simple model devoted to optimizing the blue radiation is provided.

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Section: Introductionmentioning

confidence: 99%

Red, blue, and green laser-light generation from the NYAB nonlinear crystal

Jaque

Capmany

1999

Opt. Eng

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“…To make a compact system, use of solid-state lasers is promising. Historically, the principle of blue solid-state laser using intracavity SHG neodymium: yttrium aluminum garnet (Nd:YAG) laser has been discussed [16,17]. However, the stability of the frequency doubling crystal was the bottleneck for the development of a good laser which can be applied to optical equipments.…”

Section: Excitation In the Scanner Systemmentioning

confidence: 99%

Imaging and detection technologies for image analysis in electrophoresis

Miura

2001

Electrophoresis

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Image capture is the first step of image analysis. There are two major devices for image capture in the field of electrophoresis. One is the charged-couple device (CCD) camera and the other is the scanner. Image capture technologies have shown great progress in recent years especially in the field of fluorescence detection and chemiluminescent detection. The direction of image analysis is high resolution, wide dynamic range and high density precision and this holds true for the CCD camera system. Various components in the CCD camera system suitable for high-sensitive fluorescence detection and chemiluminescent detection are explained. As an example, the LAS-1000plus camera system which has 1364 x 922 pixels and generates 14-bits image is introduced. Powerful cooling enables overnight exposure of chemiluminescence. Introduction of blue light-emitting diode (LED) as excitation light source improved safety to eyes. Two types of scanners for fluorescence detection and the specific characteristics are explained. There are mechanical scanning systems using confocal optics and optical scanning systems using light collecting guide optics. Deep focusing range and equal fluorescence intensity at various depth is a characteristic feature of light collecting guide optics.

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“…The Cr:LiSAF crystal laser is a semiconductor laser which has been reported to be a pumpable variable-wavelength solid-state laser [1,3], and which is expected to function as an LD-pumped variable-wavelength laser due to its use of emissions across a wide range, from 780 to 1000 nm. In addition, the absorption coefficient for this crystal is high, and the pumping efficiency is high because the pump-light absorption bandwidth is extremely wide, roughly 100 nm centered at 670 nm, thereby reducing the effects of wavelength changes on the pumped semiconductor laser.…”

Section: Overall Configurationmentioning

confidence: 99%

“…In SHG lasers in the blue region, the generation of blue light at 473 nm [3] in KN (KNbO 3 ) crystals with a 946-nm fundamental wave from a Nd:YAG (Y 3 Al 5 O 12 ) crystal, and from Cr:Li-SAF (LiSrAlF 6 ) crystal in combination with LIO (LiIO 3 ) [4], KN [5], and LBO (LiB 3 O 5 ) crystals [6], has been reported. In SHG lasers in the blue region, the generation of blue light at 473 nm [3] in KN (KNbO 3 ) crystals with a 946-nm fundamental wave from a Nd:YAG (Y 3 Al 5 O 12 ) crystal, and from Cr:Li-SAF (LiSrAlF 6 ) crystal in combination with LIO (LiIO 3 ) [4], KN [5], and LBO (LiB 3 O 5 ) crystals [6], has been reported.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, in SHG (Second Harmonic Generation) technology, a several-watt-class high-output green SHG laser has been made a practical reality, along with increasing output of semiconductor lasers using excitation. In SHG lasers in the blue region, the generation of blue light at 473 nm [3] in KN (KNbO 3 ) crystals with a 946-nm fundamental wave from a Nd:YAG (Y 3 Al 5 O 12 ) crystal, and from Cr:Li-SAF (LiSrAlF 6 ) crystal in combination with LIO (LiIO 3 ) [4], KN [5], and LBO (LiB 3 O 5 ) crystals [6], has been reported. The authors have developed and fabricated an internal resonator-type blue-light SHG light source [7,8] at 430 nm using a combination of Cr:LiSAF and LBO crystals, and there are hopes of achieving further increases in output.…”

Section: Introductionmentioning

confidence: 99%

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