US 12,191,632 B2
Terahertz wave generating apparatus using dual mode laser
Hyun Soo Kim, Daejeon (KR); Kyung Hyun Park, Daejeon (KR); Eui Su Lee, Sejong-si (KR); Il Min Lee, Daejeon (KR); Kiwon Moon, Daejeon (KR); Dong Woo Park, Sejong-si (KR); and Jun-Hwan Shin, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Feb. 24, 2021, as Appl. No. 17/183,680.
Claims priority of application No. 10-2020-0027707 (KR), filed on Mar. 5, 2020.
Prior Publication US 2021/0281045 A1, Sep. 9, 2021
Int. Cl. H01S 5/06 (2006.01); H01L 31/08 (2006.01); H01L 31/09 (2006.01); H01S 5/026 (2006.01); H01S 5/068 (2006.01); H01S 5/12 (2021.01); H01S 5/40 (2006.01)
CPC H01S 5/068 (2013.01) [H01L 31/08 (2013.01); H01L 31/09 (2013.01); H01S 5/026 (2013.01); H01S 5/0601 (2013.01); H01S 5/12 (2013.01); H01S 5/4012 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A terahertz wave generating apparatus comprising:
a dual mode laser including a first single mode laser configured to generate a first beating signal, a gain adjustment region configured to modulate the first beating signal, and a second single mode laser configured to generate a second beating signal; and
a photomixer configured to mix the modulated first beating signal and the second beating signal, and to modulate a current supplied based on a beating frequency of the mixed first beating signal and second beating signal to generate a terahertz wave signal, and
wherein the gain adjustment region is formed between the first single mode laser and the second single mode laser, and
wherein the first beating signal is output from the first single mode laser to the gain adjustment region and is modulated based on a reverse bias voltage supplied to the gain adjustment region.