Short wavelength diode-pumped solid-state laser

Details Short wavelength diode-pumped solid-state laser Short wavelength diode-pumped solid-state laser

2007-03-27

2007-03-27

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular pumping means

C372S022000

Reexamination Certificate

active

11138606

ABSTRACT:
A diode-pumped solid-state laser including a short wavelength (e.g., blue, violet, or UV) semiconductor laser that pumps an absorption transition in a rare-earth-doped material. Responsive to this pumping, the rare-earth active ion directly emits laser radiation. A number of different wavelength outputs, including short wavelengths, are achievable dependent upon the material and the pump wavelength. The gain medium may include an active ion selected from Er3+Sm3+, Eu3+, Tb3+, Dy3+, Tm3+, Ho3+, and Pr3+. A laser diode pump source has a wavelength in the range of about 365 nm to 480 nm to excite a laser emission in the range of 370 to 800 nm. The laser diode pump source may comprise a GaN-based semiconductor. In some embodiments, the laser diode pump source supplies a pump beam in a range of 370–380 nm, 400–415 nm, 435–445 nm, or 468–478 nm.

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Colak and Zwicker, Transition rates of Tb3+ in TbP5O14, TbLiP4O12, and TbAI3(BO3)4: An evaluation for laser applications, J. Appl. Phys., vol. 54, No. 5, pp. 2156-2166 (1983).
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Bihari et al., Spectroscopy of LiYF4:Eu3+single Crystals, J. Phys.: Condens. Matter, vol. 2, pp. 5703-5713 (1990).
Colak and Zwicker, Transition rates of Tb3+in TbP5O14, TbLiP4O12, and TbA13(BO3)4: An evaluation for laser applications, J. Appl. Phys., vol. 54, No. 5, pp. 2156-2166 (1983).
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Richter et al., Diode Pumping of a Continuous-Wave Pr3+-doped LiYF4Laser, Optics Letters, vol. 29, No. 22, pp. 2638-2640 (Nov. 15, 2004).

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