Wholesale Dealers of Yttrium Aluminium Garnet - GaSe Crystal – Dien


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Wholesale Dealers of Yttrium Aluminium Garnet - GaSe Crystal – Dien Detail:

Gallium Selenide (GaSe) non-linear optical single crystal, combining a large non-linear coefficient, a high damage threshold and a wide transparency range. GaSe is a is very suitable material for SHG in the mid-IR.DIEN TECH provide GaSe crystal with unique large size and high quality.

The frequency-doubling properties of GaSe were studied in the wavelength range between 6.0 µm and 12.0 µm. GaSe has been successfully used for efficient SHG of CO2 laser (up to 9% conversion); for SHG of pulsed CO, CO2 and chemical DF-laser (l = 2.36 µm) radiation; upconversion of CO and CO2 laser radiation into the visible range; infrared pulses generation via difference frequency mixing of Neodymium and infrared dye laser or (F-)-centre laser pulses; OPG light generation within 3.5–18 µm; terahertz (T-rays) radiation generation. It is impossibile to cut crystals for certain phase matching angles because of material structure (cleave along (001) plane) limiting areas of applications.
GaSe is very soft and layered crystal. For production of crystal with specified thickness we take thicker starting blank ,For example, 1-2 mm thick and then begin to remove layer by layer trying to approach to ordered thickness while keeping good surface smoothness and flatness. However, for thicknesses about 0.2-0.3 mm or less GaSe plate easily bends and we obtain curved surface instead of flat one.
So we usually stay at 0.2 mm thickness for 10×10 mm crystal mounted in in dia.1” holder with CA opening dia. 9-9.5 mm.
Sometimes we accept orders for 0.1 mm crystals, however, we do not guarantee good flatness for so thin crystals.
Applications of GaSe crystals:
• THz (T-rays) radiation generation;
• THz Range:0.1-4 THz;
• Efficient SHG of CO 2 laser (up to 9% conversion);
• For SHG of pulsed CO, CO2 and chemical DF-laser (l = 2.36 mkm) radiation;
• Upconversion of CO and CO2 laser radiation into the visible range; infrared pulses generation via difference frequency mixing of Neodymium and infrared dye laser or (F-)-centre laser pulses;
• OPG light generation within 3.5 – 18 mkm.
SHG in the mid-IR (CO2, CO, chemical DF-laser etc.)
upconversion of IR laser radiation into the visible range
Parametric generation within 3 – 20 µm
Terahertz THz generation (Del Mar Photonics supply variety of crystals for THz generation, including ZnTe, GaP, LiNbO3 and others)
Main Properties of GaSe crystals:
Transparency range, µm 0.62 – 20
Point group 6m2
Lattice parameters a = 3.74, c = 15.89 Å
Density, g/cm3 5.03
Mohs hardness 2
Refractive indexes:
at 5.3 µm no= 2.7233, ne= 2.3966
at 10.6 µm no= 2.6975, ne= 2.3745
Non-linear coefficient, pm/V d22 = 54
Walk off 4.1° at 5.3 µm
Optical damage threshold, MW/cm2 28 (9.3 µm, 150 ns); 0.5 (10.6 µm, in CW mode); 30 (1.064 µm, 10 ns)


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Wholesale Dealers of Yttrium Aluminium Garnet - GaSe Crystal – Dien detail pictures

Wholesale Dealers of Yttrium Aluminium Garnet - GaSe Crystal – Dien detail pictures

Wholesale Dealers of Yttrium Aluminium Garnet - GaSe Crystal – Dien detail pictures


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Our firm promises all consumers with the first-class products as well as most satisfying post-sale services. We warmly welcome our regular and new consumers to join us for Wholesale Dealers of Yttrium Aluminium Garnet - GaSe Crystal – Dien , The product will supply to all over the world, such as: Surabaya, Barcelona, Czech, The quality of our products is equal to OEM's quality, because our core parts are the same with OEM supplier. The above products have passed professional certification, and we not only can produce OEM-standard products but we also accept Customized Products order.
We are really happy to find such a manufacturer that ensuring product quality at the same time the price is very cheap.
5 Stars By Alan from Morocco - 2018.10.09 19:07
The supplier cooperation attitude is very good, encountered various problems, always willing to cooperate with us, to us as the real God.
5 Stars By Annabelle from Spain - 2018.06.26 19:27