Phd Position

vor 1 Tag

Berlin, Deutschland Leibniz-Institut für Kristallzüchtung Vollzeit

We are currently seeking a highly motivated and talented individual to join our research team with a

**PhD position (M/F/d)**

for the topic:
**“Laser cooling of fluoride single crystals by anti-Stokes fluorescence”**

Laser cooling of solids, or solid-state optical refrigeration, is a technology to cool solid materials down to cryogenic temperatures by laser excitation. The cooling is accomplished by anti-Stokes fluorescence which takes thermal energy away from a solid medium. This novel technology is the basis for ultra-stable laser coolers which are intrinsically free of vibrations. Therefore, laser coolers are attractive as a compact cooling system to be implemented in space satellites and also in ultra-sensitive detections such as gravitational wave detectors. This position offers an exciting opportunity to contribute to cutting-edge research at the intersection of materials science, optics, and laser physics.

As a PhD student, you will be involved in multidisciplinary research work focusing on crystal growth, chemical/physical characterization, and experiments using lasers. The primary objective of this study is to comprehensively understand the role of impurities, which currently pose a bottleneck for achieving temperatures below the boiling point of liquid nitrogen (77 K) in this technology. Our research group is widely recognized as one of the leading teams in this field, and this position will provide you with a unique platform to make significant contributions to the advancement of laser cooling techniques.

**The key responsibilities of the PhD student** will include:

- Growing high-quality fluoride single crystals doped with rare-earth ions
- Performing chemical and spectroscopic characterization of the crystals
- Conducing laser cooling experiments using the grown fluoride crystals
- Collaborating with the research team to design and implement new experimental setups
- Analyzing and interpreting results, and contributing to scientific publications and conferences
- Keeping up-to-date with the latest research in the field of laser cooling and related areas.

**The applicant must have**:

- A master’s degree (or equivalent) and strong knowledge in materials science, solid-state physics, optics, laser physics, or a closely related field
- Experience in experimental research, preferably in crystal growth or optical characterizations
- Excellent analytical, problem-solving, and communication skills
- Ability to work independently as well as collaboratively in a team-oriented environment
- Motivation and passion for scientific research.

For information about the project contact:
**Are you interested?

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