589.3nm +/- 0.3nm Absorption Lasing Medium?

In summary: Ultimately, it may be more cost-effective to use diode-pumped Nd:YAG or fiber-coupled pump diodes for your desired output power. In summary, there is currently no known lasing medium that has a strong absorption at both 589.0nm and 589.6nm wavelengths, but some doped glasses and rare earth-doped optical fibers may have strong absorption at one of these wavelengths. Diode-pumped Nd:YAG or fiber-coupled pump diodes may be more cost-effective options for achieving your desired output power of 300W-400W.
  • #1
CoryG
2
0
Does anyone know of a lasing medium (perferably something that can be doped into an optical fiber, but a liquid or gas would work if not) that has a strong absorption at 589.0nm and 589.6nm?

Rationale: I'm trying to build a relatively cheap high powered (~300W-400W CW) LASER for DMLS, but diode-pumped Nd:Yag run about $10k for that price and fiber-coupled pump diodes are about $300/8W. Doped fiber is about $25 - $150 per meter and low-pressure Sodium-vapor lamps are both realtively cheap and highly efficient so I'd like to just mill an Aluminium optical cavity, have it Silver-plated with the doped fiber wound around the interior and a Sodium-vapor lamp inside (probably with water-cooling along the outside walls of the optical cavity) and a Bragg grating spliced onto one end of the fiber. Output wavelength isn't too big of a concern, but I'd like to keep it under 1.5um if possible.
 
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  • #2
Unfortunately, no lasing medium that I am aware of has a strong absorption profile at both 589.0nm and 589.6nm wavelengths. However, some doped glasses such as Bismuth Germanate (Bi4Ge3O12) may have a strong absorption at one of those wavelengths. Additionally, some rare earth-doped optical fibers may be able to absorb at these wavelengths, but this would depend on the specific composition of the fiber.
 

Related to 589.3nm +/- 0.3nm Absorption Lasing Medium?

1. What does "589.3nm +/- 0.3nm" mean in relation to this lasing medium?

This refers to the specific wavelength of light that the lasing medium is capable of absorbing. The +/- 0.3nm indicates the range of wavelengths that the medium can absorb, allowing for a slight variation in the exact wavelength.

2. How is the absorption of this lasing medium measured?

Absorption is typically measured using a spectrometer, which analyzes the wavelengths of light that are absorbed by the medium. The results are then compared to the known absorption spectrum of the medium to determine the specific wavelength of absorption.

3. What are the applications of using a lasing medium with a specific absorption wavelength?

The specific absorption wavelength of a lasing medium can be used in a variety of applications, including fluorescence microscopy, spectroscopy, and laser technology. It allows for precise control and manipulation of light, making it useful in a range of scientific and technological fields.

4. Can the absorption of this lasing medium be altered or customized?

Yes, the absorption of a lasing medium can be altered or customized by adjusting the composition or structure of the medium. This can be achieved through various methods such as doping, which involves introducing impurities to the medium, or changing the temperature or pressure at which the medium is operated.

5. How does the absorption of this lasing medium impact the overall performance of a laser?

The absorption of a lasing medium plays a crucial role in the performance of a laser. It determines the specific wavelength of light that the laser will emit, as well as the efficiency and stability of the laser. A lasing medium with a high absorption rate will result in a more powerful and stable laser output.

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