Midwavelength Infrared Colloidal Nanowire Laser

Gahyeon Kim, Dongsun Choi, Soo Yeon Chae, Rajesh Bera, Seongchul Park, Junho Lee, Su Hyeon Min, Han Kyu Choi, Juyeong Kim, Joonsuk Huh, Kihang Choi, Manho Lim, Hugh I. Kim, Minhaeng Cho, Kwang Seob Jeong

Research output: Contribution to journalArticlepeer-review


Realizing bright colloidal infrared emitters in the midwavelength infrared (or mid-IR), which can be used for low-power IR light-emitting diodes (LEDs), sensors, and deep-tissue imaging, has been a challenge for the last few decades. Here, we present colloidal tellurium nanowires with strong emission intensity at room temperature and even lasing at 3.6 μm (ω) under cryotemperature. Furthermore, the second-harmonic field at 1.8 μm (2ω) and the third-harmonic field at 1.2 μm (3ω) are successfully generated thanks to the intrinsic property of the tellurium nanowire. These unique optical features have never been reported for colloidal tellurium nanocrystals. With the colloidal midwavelength infrared (MWIR) Te nanowire laser, we demonstrate its potential in biomedical applications. MWIR lasing has been clearly observed from nanowires embedded in a human neuroblastoma cell, which could further realize deep-tissue imaging and thermotherapy in the near future.

Original languageEnglish
Pages (from-to)1431-1437
Number of pages7
JournalJournal of Physical Chemistry Letters
Issue number6
Publication statusPublished - 2022 Feb 17

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Midwavelength Infrared Colloidal Nanowire Laser'. Together they form a unique fingerprint.

Cite this