PhD position fmd K 925

The LeibnizInstitut fr Kristallzchtung (IKZ) is a leading research institution in the field of science & technology as well as service & transfer of crystalline materials. Our goal is to enable solutions for pressing societal challenges (e.g. communication artificial intelligence climate protection health etc. through modern electronic & photonic technologies. The work covers the entire spectrum from basic and applied research to preindustrial development and is carried out in cooperation with national and international partners from universities academies and industry. The institute is part of the Forschungsverbund Berlin and a member of the Leibniz Association . You can find more details on the institute webpage: .

We are offering a

PhD position (f/m/d)

SolidState Optical Refrigeration of Fluoride Crystals

Solidstate optical refrigeration or laser cooling of solids is a technology to cool down solid states to cryogenic temperatures <123 K) by optical excitation. This technology realizes allsolidstate ultracompact optical cryocoolers which possess no moving part and require no cryogenic liquid. Such a vibrationfree compact cryogenic cooling system is desired to be implementede.g. in space satellites. The cooling is driven by antiStokes fluorescence following optical excitation with lowenergy photons thereby the fluorescence photons carry away the vibrational energy of the lattice (or phonons). For efficient cooling not only spectroscopic properties but also the quality and purity of the crystals are essential.

As a PhD student you will be involved in multidisciplinary research work focusing on crystal growth chemical/physical characterization and experiments using laser sources. The primary objective of this study is to explore novel crystals to understand the role of impurities and to demonstrate cryogenic optical refrigeration towards the milestone to achieve 77K the liquid nitrogen temperature. 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 scientific community of optical refrigeration.

The key responsibilities of the PhD student will include:

• Growth of highquality fluoride crystals d with rareearth ions
• Structural and chemical analyses of the grown crystals
• Spectroscopic study of the grown crystals at various temperatures
• Implementation of optical refrigeration experiments.

The applicant must have:

• A masters degree (or equivalent) and strong knowledge in optical science solidstate physics materials science or a closely related field
• Experience in experimental research preferably in crystal growth or optical characterizations
• Ability to work independently as well as collaboratively in a teamoriented environment
• Motivation and passion for scientific research.

What we offer:

The position is limited to three years an extension for another year is possible. Payment is according to TVD Bund (E13 75 (Collective agreement for the public sector). The contract includes the usual social benefits 30 vacation days in a 5day week flexible working hours). The LeibnizInstitut fr Kristallzchtung actively promotes the development of young scientists and follows the guidelines of the Leibniz Association.

The LeibnizInstitut fr Kristallzchtung actively supports a healthy worklife balance and is an equal opportunities employer. Female candidates are encouraged to apply and will be given preference if suitably qualified. Among equally qualified candidates preference will be given to candidates with disabilities. IKZ promotes diversity. We welcome every qualified application regardless of age belief disabilities ethnic origin gender nationality religion or sexual orientation.

If you want to have more information about the project please contact us:
Dr. Hiroki Tanaka

Have you intrested

Then apply with a letter of motivation curriculum vitae and all relevant certificates by 31.03.2025. To do so please go to Job offers/jobs on our homepage and click on this advertisement and then on Apply online. Please send us your complete application documents this way.

We look forward to receiving your application!